nomad_query.min.json 170 KB
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{"autocomplete":{},"context":[{"name":"archive","selected":true,"title":"Query all uploaded archives"},{"name":"calculation","title":"Query all calculations"},{"name":"section","title":"Query all data sections"},{"name":"single_configuration_calculation","title":"Query all data with single configuration calculation sections"},{"name":"section_system","title":"Query all data with system sections"}],"fields":{"*value":[],"^negation":[{"class":"^negation","name":"not","title":"Invert current query (logical negation)","value":"not"}],"^quantifiers":[{"class":"^quantifiers","name":"any","title":"Select calculations that matches at least one of the values as given in the query expression","value":"any"},{"class":"^quantifiers","name":"all","title":"Select calculations that matches all values as given in the query expression","value":"all"},{"class":"^quantifiers","name":"alltarget","title":"Select calculations that matches at least all of the values as given in the query expressions","value":"alltarget"}],"metadata":[{"class":"metadata","dtype":"i","mode":"","name":"atom_atom_number","title":"(deprecated) Atomic number Z of the atom.","type":"value","value":"atom_atom_number"},{"class":"metadata","dtype":"f","mode":"","name":"atom_charge","title":"Charge of the atom type.","type":"value","value":"atom_charge"},{"class":"metadata","dtype":"f","mode":"","name":"atom_concentrations","title":"Concentration of the atom species in a variable composition, by default it should be considered an array of ones. Summing these should give the number_of_sites","type":"value","value":"atom_concentrations"},{"class":"metadata","dtype":"f","mode":"","name":"atom_forces","title":"Forces acting on the atoms, calculated as minus gradient of energy_total, **including** constraints, if present. The derivatives with respect to displacements of nuclei are evaluated in Cartesian coordinates. In addition, these forces are obtained by filtering out the unitary transformations (center-of-mass translations and rigid rotations for non-periodic systems, see atom_forces_free_raw for the unfiltered counterpart). Forces due to constraints such as fixed atoms, distances, angles, dihedrals, etc. are included (see atom_forces_raw for the unfiltered counterpart).","type":"value","value":"atom_forces"},{"class":"metadata","dtype":"f","mode":"","name":"atom_forces_free","title":"Forces acting on the atoms, calculated as minus gradient of energy_free, **including** constraints, if present. The derivatives with respect to displacements of the nuclei are evaluated in Cartesian coordinates. The (electronic) energy_free contains the information on the change in (fractional) occupation of the electronic eigenstates, which are accounted for in the derivatives, yielding a truly energy-conserved quantity. In addition, these forces are obtained by filtering out the unitary transformations (center-of-mass translations and rigid rotations for non-periodic systems, see atom_forces_free_raw for the unfiltered counterpart). Forces due to constraints such as fixed atoms, distances, angles, dihedrals, etc. are included (see atom_forces_free_raw for the unfiltered counterpart).","type":"value","value":"atom_forces_free"},{"class":"metadata","dtype":"f","mode":"","name":"atom_forces_free_raw","title":"Forces acting on the atoms, calculated as minus gradient of energy_free, **without** constraints. The derivatives with respect to displacements of nuclei are evaluated in Cartesian coordinates. The (electronic) energy_free contains the change in (fractional) occupation of the electronic eigenstates, which are accounted for in the derivatives, yielding a truly energy-conserved quantity. These forces may contain unitary transformations (center-of-mass translations and rigid rotations for non-periodic systems) that are normally filtered separately (see atom_forces_free for the filtered counterpart). Forces due to constraints such as fixed atoms, distances, angles, dihedrals, etc. are also considered separately (see atom_forces_free for the filtered counterpart).","type":"value","value":"atom_forces_free_raw"},{"class":"metadata","dtype":"f","mode":"","name":"atom_forces_raw","title":"Forces acting on the atoms, calculated as minus gradient of energy_total, **without** constraints. The derivatives with respect to displacements of the nuclei are evaluated in Cartesian coordinates. These forces may contain unitary transformations (center-of-mass translations and rigid rotations for non-periodic systems) that are normally filtered separately (see atom_forces for the filtered counterpart). Forces due to constraints such as fixed atoms, distances, angles, dihedrals, etc. are also considered separately (see atom_forces for the filtered counterpart).","type":"value","value":"atom_forces_raw"},{"class":"metadata","dtype":"f","mode":"","name":"atom_forces_t0","title":"Forces acting on the atoms, calculated as minus gradient of energy_total_t0, **including** constraints, if present. The derivatives with respect to displacements of the nuclei are evaluated in Cartesian coordinates. In addition, these forces are obtained by filtering out the unitary transformations (center-of-mass translations and rigid rotations for non-periodic systems, see atom_forces_free_T0_raw for the unfiltered counterpart). Forces due to constraints such as fixed atoms, distances, angles, dihedrals, etc. are also included (see atom_forces_free_T0_raw for the unfiltered counterpart).","type":"value","value":"atom_forces_t0"},{"class":"metadata","dtype":"f","mode":"","name":"atom_forces_t0_raw","title":"Forces acting on the atoms, calculated as minus gradient of energy_total_t0, **without** constraints. The derivatives with respect to displacements of the nuclei are evaluated in Cartesian coordinates. These forces may contain unitary transformations (center-of-mass translations and rigid rotations for non-periodic systems) that are normally filtered separately (see atom_forces_t0 for the filtered counterpart). Forces due to constraints such as fixed atoms, distances, angles, dihedrals, etc. are also considered separately (see atom_forces_t0 for the filtered counterpart).","type":"value","value":"atom_forces_t0_raw"},{"class":"metadata","dtype":"f","mode":"","name":"atom_in_molecule_charge","title":"(deprecated) Charge of each atom in the molecule.","type":"value","value":"atom_in_molecule_charge"},{"class":"metadata","dtype":"C","mode":"","name":"atom_in_molecule_name","title":"(deprecated) Name (label) of each atom in the molecule.","type":"string","value":"atom_in_molecule_name"},{"class":"metadata","dtype":"r","mode":"","name":"atom_in_molecule_to_atom_type_ref","title":"(deprecated) Reference to the atom type of each atom in the molecule.","type":"value","value":"atom_in_molecule_to_atom_type_ref"},{"class":"metadata","dtype":"C","mode":"","name":"atom_labels","title":"Labels of the atoms. These strings identify the atom kind and conventionally start with the symbol of the atomic species, possibly followed by the atomic number. The same atomic species can be labeled with more than one atom_labels in order to distinguish, e.g., atoms of the same species assigned to different atom-centered basis sets or pseudo-potentials, or simply atoms in different locations in the structure (e.g., bulk and surface). These labels can also be used for *particles* that do not correspond to physical atoms (e.g., ghost atoms in some codes using atom-centered basis sets). This metadata defines a configuration and is therefore required.","type":"string","value":"atom_labels"},{"class":"metadata","dtype":"f","mode":"","name":"atom_mass","title":"Mass of the atom type.","type":"value","value":"atom_mass"},{"class":"metadata","dtype":"C","mode":"","name":"atom_name","title":"Name (label) of the atom type.","type":"string","value":"atom_name"},{"class":"metadata","dtype":"i","mode":"","name":"atom_number","title":"Atomic number Z of the atom.","type":"value","value":"atom_number"},{"class":"metadata","dtype":"f","mode":"","name":"atom_positions","title":"Positions of all the atoms, in Cartesian coordinates. This metadata defines a configuration and is therefore required. For alloys where concentrations of species are given for each site in the unit cell, it stores the position of the sites.","type":"value","value":"atom_positions"},{"class":"metadata","dtype":"f","mode":"","name":"atom_positions_primitive","title":"Atom positions in the primitive cell in reduced units.","type":"value","value":"atom_positions_primitive"},{"class":"metadata","dtype":"f","mode":"","name":"atom_positions_std","title":"Standardized atom positions in reduced units.","type":"value","value":"atom_positions_std"},{"class":"metadata","dtype":"f","mode":"","name":"atom_projected_dos_energies","title":"Array containing the set of discrete energy values for the atom-projected density (electronic-energy) of states (DOS).","type":"value","value":"atom_projected_dos_energies"},{"class":"metadata","dtype":"i","mode":"","name":"atom_projected_dos_lm","title":"Tuples of $l$ and $m$ values for which atom_projected_dos_values_lm are given. For the quantum number $l$ the conventional meaning of azimuthal quantum number is always adopted. For the integer number $m$, besides the conventional use as magnetic quantum number ($l+1$ integer values from $-l$ to $l$), a set of different conventions is accepted (see the [m_kind wiki page](https://gitlab.rzg.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/m-kind). The adopted convention is specified by atom_projected_dos_m_kind.","type":"value","value":"atom_projected_dos_lm"},{"class":"metadata","dtype":"C","mode":"","name":"atom_projected_dos_m_kind","title":"String describing what the integer numbers of $m$ in atom_projected_dos_lm mean. The allowed values are listed in the [m_kind wiki page](https://gitlab.rzg.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/m-kind).","type":"string","value":"atom_projected_dos_m_kind"},{"class":"metadata","dtype":"f","mode":"","name":"atom_projected_dos_values_lm","title":"Values correspond to the number of states for a given energy (the set of discrete energy values is given in atom_projected_dos_energies) divided into contributions from each $l,m$ channel for the atom-projected density (electronic-energy) of states. Here, there are as many atom-projected DOS as the number_of_atoms, the list of labels of the atoms and their meanings are in atom_labels.","type":"value","value":"atom_projected_dos_values_lm"},{"class":"metadata","dtype":"f","mode":"","name":"atom_projected_dos_values_total","title":"Values correspond to the number of states for a given energy (the set of discrete energy values is given in atom_projected_dos_energies) divided into contributions summed up over all $l$ channels for the atom-projected density (electronic-energy) of states (DOS). Here, there are as many atom-projected DOS as the number_of_atoms, the list of labels of the atoms and their meanings are in atom_labels.","type":"value","value":"atom_projected_dos_values_total"},{"class":"metadata","dtype":"i","mode":"","name":"atom_to_molecule","title":"(deprecated) Table mapping atom to molecules: the first column is the index of the molecule and the second column the index of the atom, signifying that the atom in the second column belongs to the molecule in the first column in the same row.","type":"value","value":"atom_to_molecule"},{"class":"metadata","dtype":"f","mode":"","name":"atom_type_charge","title":"(deprecated) Charge of the atom type.","type":"value","value":"atom_type_charge"},{"class":"metadata","dtype":"f","mode":"","name":"atom_type_mass","title":"(deprecated) Mass of the atom type.","type":"value","value":"atom_type_mass"},{"class":"metadata","dtype":"C","mode":"","name":"atom_type_name","title":"(deprecated) Name (label) of the atom type.","type":"string","value":"atom_type_name"},{"class":"metadata","dtype":"f","mode":"","name":"atom_velocities","title":"Velocities of the nuclei, defined as the change in Cartesian coordinates of the nuclei with respect to time.","type":"value","value":"atom_velocities"},{"class":"metadata","dtype":"C","mode":"","name":"atomic_multipole_kind","title":"String describing the method used to obtain the electrostatic multipoles (including the electric charge, dipole, etc.) for each atom. Such multipoles require a charge-density partitioning scheme, specified by the value of this metadata. Allowed values are listed in the [atomic_multipole_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/atomic-multipole-kind).","type":"string","value":"atomic_multipole_kind"},{"class":"metadata","dtype":"i","mode":"","name":"atomic_multipole_lm","title":"Tuples of $l$ and $m$ values for which the atomic multipoles (including the electric charge, dipole, etc.) are given. The method used to obtain the multipoles is specified by atomic_multipole_kind. The meaning of the integer number $l$ is monopole/charge for $l=0$, dipole for $l=1$, quadrupole for $l=2$, etc. The meaning of the integer numbers $m$ is specified by atomic_multipole_m_kind.","type":"value","value":"atomic_multipole_lm"},{"class":"metadata","dtype":"C","mode":"","name":"atomic_multipole_m_kind","title":"String describing the definition for each integer number $m$ in atomic_multipole_lm. Allowed values are listed in the [m_kind wiki page](https://gitlab.rzg.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/m-kind).","type":"string","value":"atomic_multipole_m_kind"},{"class":"metadata","dtype":"f","mode":"","name":"atomic_multipole_values","title":"Value of the multipoles (including the monopole/charge for $l$ = 0, the dipole for $l$ = 1, etc.) for each atom, calculated as described in atomic_multipole_kind.","type":"value","value":"atomic_multipole_values"},{"class":"metadata","dtype":"i","mode":"","name":"atomic_numbers_primitive","title":"Atomic numbers in the primitive cell.","type":"value","value":"atomic_numbers_primitive"},{"class":"metadata","dtype":"i","mode":"","name":"atomic_numbers_std","title":"Atomic numbers of the atoms in the standardized cell.","type":"value","value":"atomic_numbers_std"},{"class":"metadata","dtype":"f","mode":"","name":"band_energies","title":"$k$-dependent or $q$-dependent  energies of the electronic or vibrational band segment (electronic/vibrational band structure). This is a third-order tensor, with one dimension used for the spin channels (1 in case of a vibrational band structure), one for the $k$ or $q$ points for each segment, and one for the eigenvalue sequence.","type":"value","value":"band_energies"},{"class":"metadata","dtype":"f","mode":"","name":"band_energies_normalized","title":"$k$-dependent energies of the electronic band segment (electronic band structure) with respect to the top of the valence band. This is a third-order tensor, with one dimension used for the spin channels, one for the $k$ points for each segment, and one for the eigenvalue sequence.","type":"value","value":"band_energies_normalized"},{"class":"metadata","dtype":"f","mode":"","name":"band_k_points","title":"Fractional coordinates of the $k$ or $q$ points (in the basis of the reciprocal-lattice vectors) for which the electronic energy are given.","type":"value","value":"band_k_points"},{"class":"metadata","dtype":"f","mode":"","name":"band_k_points_normalized","title":"Fractional coordinates of the $k$ points (in the basis of the reciprocal-lattice vectors) for which the normalized electronic energies are given.","type":"value","value":"band_k_points_normalized"},{"class":"metadata","dtype":"f","mode":"","name":"band_occupations","title":"Occupation of the $k$-points along the electronic band. The size of the dimensions of this third-order tensor are the same as for the tensor in band_energies.","type":"value","value":"band_occupations"},{"class":"metadata","dtype":"f","mode":"","name":"band_occupations_normalized","title":"Occupation of the $k$-points along the normalized electronic band. The size of the dimensions of this third-order tensor are the same as for the tensor in band_energies.","type":"value","value":"band_occupations_normalized"},{"class":"metadata","dtype":"C","mode":"","name":"band_segm_labels","title":"Start and end labels of the points in the segment (one-dimensional pathways) sampled in the $k$-space or $q$-space, using the conventional symbols, e.g., Gamma, K, L. The coordinates (fractional, in the reciprocal space) of the start and end points for each segment are given in band_segm_start_end","type":"string","value":"band_segm_labels"},{"class":"metadata","dtype":"C","mode":"","name":"band_segm_labels_normalized","title":"Start and end labels of the points in the segment (one-dimensional pathways) sampled in the $k$-space, using the conventional symbols, e.g., Gamma, K, L. The coordinates (fractional, in the reciprocal space) of the start and end points for each segment are given in band_segm_start_end_normalized","type":"string","value":"band_segm_labels_normalized"},{"class":"metadata","dtype":"f","mode":"","name":"band_segm_start_end","title":"Fractional coordinates of the start and end point (in the basis of the reciprocal lattice vectors) of the segment sampled in the $k$ space. The conventional symbols (e.g., Gamma, K, L) of the same points are given in band_segm_labels","type":"value","value":"band_segm_start_end"},{"class":"metadata","dtype":"f","mode":"","name":"band_segm_start_end_normalized","title":"Fractional coordinates of the start and end point (in the basis of the reciprocal lattice vectors) of the segment sampled in the $k$ space. The conventional symbols (e.g., Gamma, K, L) of the same points are given in band_segm_labels","type":"value","value":"band_segm_start_end_normalized"},{"class":"metadata","dtype":"C","mode":"","name":"band_structure_kind","title":"String to specify the kind of band structure (either electronic or vibrational).","type":"string","value":"band_structure_kind"},{"class":"metadata","dtype":"C","mode":"","name":"basis_set","title":"Unique string identifying the basis set used for the final wavefunctions calculated with xc_method. It might identify a class of basis sets, often matches one of the strings given in any of basis_set_name.","type":"string","value":"basis_set"},{"class":"metadata","dtype":"i","mode":"","name":"basis_set_atom_centered_ls","title":"Azimuthal quantum number ($l$) values (of the angular part given by the spherical harmonic $Y_{lm}$) of the atom-centered basis function defined in the current section_basis_set_atom_centered.","type":"value","value":"basis_set_atom_centered_ls"},{"class":"metadata","dtype":"f","mode":"","name":"basis_set_atom_centered_radial_functions","title":"Values of the radial function of the different basis function kinds. The values are numerically tabulated on a default 0.01-nm equally spaced grid from 0 to 4 nm. The 5 tabulated values are $r$, $f(r)$, $f'(r)$, $f(r) \\cdot r$, $\\frac{d}{dr}(f(r) \\cdot r)$.","type":"value","value":"basis_set_atom_centered_radial_functions"},{"class":"metadata","dtype":"C","mode":"","name":"basis_set_atom_centered_short_name","title":"Code-specific, but explicative, base name for the basis set (not unique). Details are explained in the [basis_set_atom_centered_short_name wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/basis-set-atom-centered-short-name), this name should not contain the *atom kind* (to simplify the use of a single name for multiple elements).","type":"string","value":"basis_set_atom_centered_short_name"},{"class":"metadata","dtype":"C","mode":"","name":"basis_set_atom_centered_unique_name","title":"Code-specific, but explicative, base name for the basis set (not unique). This string starts with basis_set_atom_centered_short_name. If the basis set defined in this section_basis_set_atom_centered is not identical to the default definition (stored in a database) of the basis set with the same name stored in a database, then the string is extended by 10 identifiable characters as explained in the [basis_set_atom_centered_name wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/basis-set-atom-centered-unique-name). The reason for this procedure is that often atom-centered basis sets are obtained by fine tuning basis sets provided by the code developers or other sources. Each basis sets, which has normally a standard name, often reported in publications, has also several parameters that can be tuned. This metadata tries to keep track of the original basis set and its modifications. This string here defined should not contain the *atom kind* for which this basis set is intended for, in order to simplify the use of a single name for multiple *atom kinds* (see atom_labels for the actual meaning of *atom kind*).","type":"string","value":"basis_set_atom_centered_unique_name"},{"class":"metadata","dtype":"i","mode":"","name":"basis_set_atom_number","title":"Atomic number (i.e., number of protons) of the atom for which this basis set is constructed (0 means unspecified or a pseudo atom).","type":"value","value":"basis_set_atom_number"},{"class":"metadata","dtype":"C","mode":"","name":"basis_set_cell_dependent_kind","title":"A string defining the type of the cell-dependent basis set (i.e., non atom centered such as plane-waves). Allowed values are listed in the [basis_set_cell_dependent_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/basis-set-cell-dependent-kind).","type":"string","value":"basis_set_cell_dependent_kind"},{"class":"metadata","dtype":"C","mode":"","name":"basis_set_cell_dependent_name","title":"A label identifying the cell-dependent basis set (i.e., non atom centered such as plane-waves). Allowed values are listed in the [basis_set_cell_dependent_name wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/basis-set-cell-dependent-name).","type":"string","value":"basis_set_cell_dependent_name"},{"class":"metadata","dtype":"C","mode":"","name":"basis_set_kind","title":"String describing the use of the basis set, i.e, if it used for expanding a wave-function or an electron density. Allowed values are listed in the [basis_set_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/basis-set-kind).","type":"string","value":"basis_set_kind"},{"class":"metadata","dtype":"C","mode":"","name":"basis_set_name","title":"String identifying the basis set in an unique way. The rules for building this string are specified in the [basis_set_name wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/basis-set-name).","type":"string","value":"basis_set_name"},{"class":"metadata","dtype":"f","mode":"","name":"basis_set_planewave_cutoff","title":"Spherical cutoff  in reciprocal space for a plane-wave basis set. It is the energy of the highest plan-ewave ($\\frac{\\hbar^2|k+G|^2}{2m_e}$) included in the basis set. Note that normally this basis set is used for the wavefunctions, and the density would have 4 times the cutoff, but this actually depends on the use of the basis set by the method.","type":"value","value":"basis_set_planewave_cutoff"},{"class":"metadata","dtype":"C","mode":"","name":"bravais_lattice","title":"Identifier for the Bravais lattice in Pearson notation. The first lowercase letter identifies the crystal family and can be one of the following: a (triclinic), b (monoclinic), o (orthorhombic), t (tetragonal), h (hexagonal) or c (cubic). The second uppercase letter identifies the centring and can be one of the following: P (primitive), S (face centred), I (body centred), R (rhombohedral centring) or F (all faces centred).","type":"string","value":"bravais_lattice"},{"class":"metadata","dtype":"","mode":"","name":"calculation_context","title":"Contains information relating to a calculation.","type":"section","value":"calculation_context"},{"class":"metadata","dtype":"C","mode":"","name":"calculation_file_uri","title":"Contains the nomad uri of a raw the data file connected to the current run. There should be an value for the main_file_uri and all ancillary files.","type":"string","value":"calculation_file_uri"},{"class":"metadata","dtype":"C","mode":"","name":"calculation_gid","title":"Unique identifier of a calculation.","type":"string","value":"calculation_gid"},{"class":"metadata","dtype":"C","mode":"","name":"calculation_method","title":"String that uniquely represents the method used to calculate energy_total, If the present calculation_method_current is a perturbative method Y that uses method X as starting point, this string is automatically created as X@Y, where X is taken from calculation_method_current and Y from method_to_method_ref. In order to activate this, method_to_method_kind must have the value starting_point (see the [method_to_method_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/method-to-method-kind)).","type":"string","value":"calculation_method"},{"class":"metadata","dtype":"C","mode":"","name":"calculation_method_current","title":"String that represents the method used to calculate the energy_current. If the method is perturbative, this string does not describe the starting point method, the latter being referenced to by section_method_to_method_refs. For self-consistent field (SCF) ab initio calculations, for example, this is composed by concatenating xc_method_current and basis_set. See [calculation_method_current wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/calculation-method-current) for the details.","type":"string","value":"calculation_method_current"},{"class":"metadata","dtype":"C","mode":"","name":"calculation_method_kind","title":"Kind of method in calculation_method_current.\n\nAccepted values are:\n\n- absolute\n- perturbative.","type":"string","value":"calculation_method_kind"},{"class":"metadata","dtype":"C","mode":"","name":"calculation_pid","title":"Repository pid of this calculation","type":"string","value":"calculation_pid"},{"class":"metadata","dtype":"C","mode":"","name":"calculation_to_calculation_external_url","title":"URL used to reference an externally stored calculation. The kind of relationship between the present and the referenced section_single_configuration_calculation is specified by calculation_to_calculation_kind.","type":"string","value":"calculation_to_calculation_external_url"},{"class":"metadata","dtype":"C","mode":"","name":"calculation_to_calculation_kind","title":"String defining the relationship between the referenced section_single_configuration_calculation and the present section_single_configuration_calculation. Valid values are described in the [calculation_to_calculation_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/calculation-to-calculation-kind). Often calculations are connected, for instance, one calculation is a perturbation performed using a self-consistent field (SCF) calculation as starting point, or a simulated system is partitioned in regions with different but connected Hamiltonians (e.g., QM/MM, or a region treated via Kohn-Sham DFT embedded into a region treated via orbital-free DFT). Hence, the need of keeping track of these connected calculations. The referenced calculation is identified via calculation_to_calculation_ref (typically used for a calculation in the same section_run) or calculation_to_calculation_external_url.","type":"string","value":"calculation_to_calculation_kind"},{"class":"metadata","dtype":"r","mode":"","name":"calculation_to_calculation_ref","title":"Reference to another calculation. If both this and calculation_to_calculation_external_url are given, then calculation_to_calculation_ref is a local copy of the URL given in calculation_to_calculation_external_url. The kind of relationship between the present and the referenced section_single_configuration_calculation is specified by calculation_to_calculation_kind.","type":"value","value":"calculation_to_calculation_ref"},{"class":"metadata","dtype":"C","mode":"","name":"calculation_to_folder_external_url","title":"URL used to reference a folder containing external calculations. The kind of relationship between the present and the referenced section_single_configuration_calculation is specified by calculation_to_folder_kind.","type":"string","value":"calculation_to_folder_external_url"},{"class":"metadata","dtype":"C","mode":"","name":"calculation_to_folder_kind","title":"String defining the relationship between the referenced section_single_configuration_calculation and a folder containing calculations.","type":"string","value":"calculation_to_folder_kind"},{"class":"metadata","dtype":"C","mode":"","name":"choice","title":"String that specifies the centering, origin and basis vector settings of the 3D space group that defines the symmetry group of the simulated physical system (see section_system). Values are as defined by spglib.","type":"string","value":"choice"},{"class":"metadata","dtype":"b","mode":"","name":"configuration_periodic_dimensions","title":"Array labeling which of the lattice vectors use periodic boundary conditions. Note for the parser developers: This value is not expected to be given for each section_single_configuration_calculation. It is assumed to be valid from the section_single_configuration_calculation where it is defined for all subsequent section_single_configuration_calculation in section_run, until redefined.","type":"value","value":"configuration_periodic_dimensions"},{"class":"metadata","dtype":"C","mode":"","name":"configuration_raw_gid","title":"Checksum of the configuration_core, i.e. the geometry of the system. The values are not normalized in any way so equivalent configurations might have different values","type":"string","value":"configuration_raw_gid"},{"class":"metadata","dtype":"f","mode":"","name":"conserved_quantity","title":"The values of a quantity that should be conserved,  along a sequence of frames (i.e., a trajectory). A frame is one section_single_configuration_calculation), for example the total energy in the NVE ensemble. If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_conserved_quantity_frames.","type":"value","value":"conserved_quantity"},{"class":"metadata","dtype":"i","mode":"","name":"constraint_atoms","title":"List of the indexes involved in this constraint. The fist atom has index 1, the last number_of_topology_atoms.","type":"value","value":"constraint_atoms"},{"class":"metadata","dtype":"C","mode":"","name":"constraint_kind","title":"Short and unique name for this constraint type. Valid names are described in the [constraint\\_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/constraint-kind).","type":"string","value":"constraint_kind"},{"class":"metadata","dtype":"D","mode":"","name":"constraint_parameters","title":"Explicit constraint parameters for this kind of constraint (depending on the constraint type, some might be given implicitly through other means).","type":"value","value":"constraint_parameters"},{"class":"metadata","dtype":"r","mode":"","name":"constraint_to_topology_group_ref","title":"Reference to the topological group of atoms which is used to define contraint on it.","type":"value","value":"constraint_to_topology_group_ref"},{"class":"metadata","dtype":"C","mode":"","name":"dft_plus_u_functional","title":"Type of DFT+U functional (such as DFT/DFT+U double-counting compensation). Valid names are described in the [dft\\_plus\\_u\\_functional wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/dft-plus-u-functional).","type":"string","value":"dft_plus_u_functional"},{"class":"metadata","dtype":"i","mode":"","name":"dft_plus_u_orbital_atom","title":"DFT+U-orbital setting: atom index (references index of atom_labels/atom_positions)","type":"value","value":"dft_plus_u_orbital_atom"},{"class":"metadata","dtype":"f","mode":"","name":"dft_plus_u_orbital_j","title":"DFT+U-orbital setting: value J (exchange interaction)","type":"value","value":"dft_plus_u_orbital_j"},{"class":"metadata","dtype":"C","mode":"","name":"dft_plus_u_orbital_label","title":"DFT+U-orbital setting: orbital label (normally (n,l)), notation: '3d', '4f', ...","type":"string","value":"dft_plus_u_orbital_label"},{"class":"metadata","dtype":"f","mode":"","name":"dft_plus_u_orbital_u","title":"DFT+U-orbital setting: value U (on-site Coulomb interaction)","type":"value","value":"dft_plus_u_orbital_u"},{"class":"metadata","dtype":"f","mode":"","name":"dft_plus_u_orbital_u_effective","title":"DFT+U-orbital setting: value U_{effective} (U-J), if implementation uses it","type":"value","value":"dft_plus_u_orbital_u_effective"},{"class":"metadata","dtype":"C","mode":"","name":"dft_plus_u_projection_type","title":"DFT+U: Type of orbitals used for projection in order to calculate occupation numbers. Valid names are described in the [dft\\_plus\\_u\\_projection\\_type wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/dft-plus-u-projection-type).","type":"string","value":"dft_plus_u_projection_type"},{"class":"metadata","dtype":"f","mode":"","name":"dos_energies","title":"Array containing the set of discrete energy values for the density (electronic-energy or vibrational energy) of states (DOS). This is the total DOS, see atom_projected_dos_energies and species_projected_dos_energies for partial density of states.","type":"value","value":"dos_energies"},{"class":"metadata","dtype":"f","mode":"","name":"dos_energies_normalized","title":"Array containing the set of discrete energy values with respect to the top of the valence band for the density (electronic-energy) of states (DOS). This is the total DOS, see atom_projected_dos_energies and species_projected_dos_energies for partial density of states.","type":"value","value":"dos_energies_normalized"},{"class":"metadata","dtype":"f","mode":"","name":"dos_fermi_energy","title":"Stores the Fermi energy of the density of states.","type":"value","value":"dos_fermi_energy"},{"class":"metadata","dtype":"f","mode":"","name":"dos_integrated_values","title":"Integrated density of states (starting at $-\\infty$), pseudo potential calculations should start with the number of core electrons if they cover only the active electrons","type":"value","value":"dos_integrated_values"},{"class":"metadata","dtype":"C","mode":"","name":"dos_kind","title":"String to specify the kind of density of states (either electronic or vibrational).","type":"string","value":"dos_kind"},{"class":"metadata","dtype":"i","mode":"","name":"dos_lm","title":"Tuples of $l$ and $m$ values for which dos_values_lm are given. For the quantum number $l$ the conventional meaning of azimuthal quantum number is always adopted. For the integer number $m$, besides the conventional use as magnetic quantum number ($l+1$ integer values from $-l$ to $l$), a set of different conventions is accepted (see the [m_kind wiki page](https://gitlab.rzg.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/m-kind). The actual adopted convention is specified by dos_m_kind.","type":"value","value":"dos_lm"},{"class":"metadata","dtype":"C","mode":"","name":"dos_m_kind","title":"String describing what the integer numbers of $m$ in dos_lm mean. The allowed values are listed in the [m_kind wiki page](https://gitlab.rzg.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/m-kind).","type":"string","value":"dos_m_kind"},{"class":"metadata","dtype":"f","mode":"","name":"dos_values","title":"Values (number of states for a given energy, the set of discrete energy values is given in dos_energies) of density (electronic-energy or vibrational-energy) of states. This refers to the simulation cell, i.e. integrating over all energies will give the number of electrons in the simulation cell.","type":"value","value":"dos_values"},{"class":"metadata","dtype":"f","mode":"","name":"dos_values_lm","title":"Array containing the density (electronic-energy) of states values projected on the various spherical harmonics (integrated on all atoms), see atom_projected_dos_values_lm for atom values.","type":"value","value":"dos_values_lm"},{"class":"metadata","dtype":"f","mode":"","name":"dos_values_per_atoms","title":"Values (number of states for a given energy divided by the numer of atoms, the set of discrete energy values is given in dos_energies) of density (electronic-energy or vibrational-energy) of states.","type":"value","value":"dos_values_per_atoms"},{"class":"metadata","dtype":"f","mode":"","name":"dos_values_per_unit_volume","title":"Values (number of states for a given energy divided by volume, the set of discrete energy values is given in dos_energies) of density (electronic-energy or vibrational-energy) of states.","type":"value","value":"dos_values_per_unit_volume"},{"class":"metadata","dtype":"C","mode":"","name":"eigenvalues_kind","title":"A short string describing the kind of eigenvalues, as defined in the [eigenvalues_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/eigenvalues-kind).","type":"string","value":"eigenvalues_kind"},{"class":"metadata","dtype":"f","mode":"","name":"eigenvalues_kpoints","title":"Coordinates of the $k$ points (in the basis of the reciprocal lattice vectors) used for the evaluation of the eigenvalues tabulated in eigenvalues_values.","type":"value","value":"eigenvalues_kpoints"},{"class":"metadata","dtype":"f","mode":"","name":"eigenvalues_kpoints_multiplicity","title":"Multiplicity of the $k$ point (i.e., how many distinct points per cell this expands to after applying all symmetries). This defaults to 1. If expansion is preformed then each point will have weight eigenvalues_kpoints_weights/eigenvalues_kpoints_multiplicity.","type":"value","value":"eigenvalues_kpoints_multiplicity"},{"class":"metadata","dtype":"f","mode":"","name":"eigenvalues_kpoints_weights","title":"Weights of the $k$ points (in the basis of the reciprocal lattice vectors) used for the evaluation of the eigenvalues tabulated in eigenvalues_values, should account for symmetry too.","type":"value","value":"eigenvalues_kpoints_weights"},{"class":"metadata","dtype":"f","mode":"","name":"eigenvalues_occupation","title":"Occupation of the eigenstates. The corresponding eigenvalues (energy) are given in eigenvalues_values. The coordinates in the reciprocal space are defined in eigenvalues_kpoints.","type":"value","value":"eigenvalues_occupation"},{"class":"metadata","dtype":"f","mode":"","name":"eigenvalues_values","title":"Values of the (electronic-energy) eigenvalues. The coordinates of the corresponding eigenstates in the reciprocal space are defined in eigenvalues_kpoints and their occupations are given in eigenvalues_occupation.","type":"value","value":"eigenvalues_values"},{"class":"metadata","dtype":"f","mode":"","name":"electronic_kinetic_energy","title":"Self-consistent electronic kinetic energy as defined in xc_method.","type":"value","value":"electronic_kinetic_energy"},{"class":"metadata","dtype":"f","mode":"","name":"electronic_kinetic_energy_scf_iteration","title":"Electronic kinetic energy as defined in xc_method during the self-consistent field (SCF) iterations.","type":"value","value":"electronic_kinetic_energy_scf_iteration"},{"class":"metadata","dtype":"b","mode":"","name":"embedded_system","title":"Is the system embedded into a host geometry?.","type":"value","value":"embedded_system"},{"class":"metadata","dtype":"f","mode":"","name":"energy_c","title":"Correlation (C) energy calculated with the method described in xc_functional.","type":"value","value":"energy_c"},{"class":"metadata","dtype":"f","mode":"","name":"energy_c_mgga","title":"Component of the correlation (C) energy at the GGA (or MetaGGA) level using the self-consistent density of the target XC functional (full unscaled value, i.e., not scaled due to exact-exchange mixing).","type":"value","value":"energy_c_mgga"},{"class":"metadata","dtype":"f","mode":"","name":"energy_change_scf_iteration","title":"Stores the change of total energy with respect to the previous self-consistent field (SCF) iteration.","type":"value","value":"energy_change_scf_iteration"},{"class":"metadata","dtype":"C","mode":"","name":"energy_code_independent_kind","title":"Type of the code-independent total energy (obtained by subtracting a reference energy calculated with the same code), created to be comparable among different codes and numerical settings. Details can be found on the [energy_code_independent wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/energy-code-independent).","type":"string","value":"energy_code_independent_kind"},{"class":"metadata","dtype":"f","mode":"","name":"energy_code_independent_value","title":"Value of the code-independent total energy (obtained by subtracting a reference energy calculated with the same code). This value is created to be comparable among different codes and numerical settings. Details can be found on the [energy_code_independent wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/energy-code-independent).","type":"value","value":"energy_code_independent_value"},{"class":"metadata","dtype":"f","mode":"","name":"energy_correction_entropy","title":"Entropy correction to the potential energy to compensate for the change in occupation so that forces at finite T do not need to keep the change of occupation in account. Defined consistently with xc_method.","type":"value","value":"energy_correction_entropy"},{"class":"metadata","dtype":"f","mode":"","name":"energy_correction_entropy_scf_iteration","title":"Entropy correction to the potential energy to compensate for the change in occupation so that forces at finite T do not need to keep the change of occupation in account. The array lists the values of the entropy correction for each self-consistent field (SCF) iteration. Defined consistently with xc_method.","type":"value","value":"energy_correction_entropy_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_correction_hartree","title":"Correction to the density-density electrostatic energy in the sum of eigenvalues (that uses the mixed density on one side), and the fully consistent density-density electrostatic energy. Defined consistently with xc_method.","type":"value","value":"energy_correction_hartree"},{"class":"metadata","dtype":"f","mode":"","name":"energy_correction_hartree_scf_iteration","title":"Correction to the density-density electrostatic energy in the sum of eigenvalues (that uses the mixed density on one side), and the fully consistent density-density electrostatic energy during the self-consistent field (SCF) iterations. Defined consistently with xc_method.","type":"value","value":"energy_correction_hartree_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_current","title":"Value of the energy calculated with calculation_method_current. energy_current is equal to energy_total for non-perturbative methods. For perturbative methods, energy_current is equal to the correction: energy_total minus energy_total of the calculation_to_calculation_ref with calculation_to_calculation_kind = starting_point (see the [method_to_method_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/method-to-method-kind)). See also [energy_current wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/energy-current).","type":"value","value":"energy_current"},{"class":"metadata","dtype":"f","mode":"","name":"energy_electrostatic","title":"Total electrostatic energy (nuclei + electrons), defined consistently with calculation_method.","type":"value","value":"energy_electrostatic"},{"class":"metadata","dtype":"f","mode":"","name":"energy_electrostatic_scf_iteration","title":"Total electrostatic energy (nuclei + electrons) during each self-consistent field (SCF) iteration.","type":"value","value":"energy_electrostatic_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_free","title":"Free energy (nuclei + electrons) (whose minimum gives the smeared occupation density calculated with smearing_kind) calculated with the method described in xc_method.","type":"value","value":"energy_free"},{"class":"metadata","dtype":"f","mode":"","name":"energy_free_per_atom","title":"Free energy per atom (whose minimum gives the smeared occupation density calculated with smearing_kind) calculated with xc_method.","type":"value","value":"energy_free_per_atom"},{"class":"metadata","dtype":"f","mode":"","name":"energy_free_per_atom_scf_iteration","title":"Free energy per atom (whose minimum gives the smeared occupation density calculated with smearing_kind) calculated with xc_method during the self-consistent field (SCF) iterations.","type":"value","value":"energy_free_per_atom_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_free_scf_iteration","title":"Free energy (whose minimum gives the smeared occupation density calculated with smearing_kind) calculated with the method described in xc_method during the self-consistent field (SCF) iterations.","type":"value","value":"energy_free_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_hartree_error","title":"Error in the Hartree (electrostatic) potential energy. Defined consistently with xc_method.","type":"value","value":"energy_hartree_error"},{"class":"metadata","dtype":"f","mode":"","name":"energy_hartree_error_scf_iteration","title":"Error in the Hartree (electrostatic) potential energy during each self-consistent field (SCF) iteration. Defined consistently with xc_method.","type":"value","value":"energy_hartree_error_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_hartree_fock_x","title":"Converged exact-exchange (Hartree-Fock) energy. Defined consistently with xc_method.","type":"value","value":"energy_hartree_fock_x"},{"class":"metadata","dtype":"f","mode":"","name":"energy_hartree_fock_x_scaled","title":"Scaled exact-exchange energy that depends on the mixing parameter of the functional. For example in hybrid functionals, the exchange energy is given as a linear combination of exact-energy and exchange energy of an approximate DFT functional; the exact exchange energy multiplied by the mixing coefficient of the hybrid functional would be stored in this metadata. Defined consistently with xc_method.","type":"value","value":"energy_hartree_fock_x_scaled"},{"class":"metadata","dtype":"f","mode":"","name":"energy_method_current","title":"Value of the energy calculated with the method calculation_method_current. Depending on calculation_method_kind it might be a total energy or only a correction.","type":"value","value":"energy_method_current"},{"class":"metadata","dtype":"f","mode":"","name":"energy_reference_fermi","title":"Fermi energy (separates occupied from unoccupied single-particle states in metals)","type":"value","value":"energy_reference_fermi"},{"class":"metadata","dtype":"f","mode":"","name":"energy_reference_fermi_iteration","title":"Fermi energy (separates occupied from unoccupied single-particle states in metals) during the self-consistent field (SCF) iterations.","type":"value","value":"energy_reference_fermi_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_reference_highest_occupied","title":"Highest occupied single-particle state energy (in insulators or HOMO energy in finite systems)","type":"value","value":"energy_reference_highest_occupied"},{"class":"metadata","dtype":"f","mode":"","name":"energy_reference_highest_occupied_iteration","title":"Highest occupied single-particle state energy (in insulators or HOMO energy in finite systems) during the self-consistent field (SCF) iterations.","type":"value","value":"energy_reference_highest_occupied_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_reference_lowest_unoccupied","title":"Lowest unoccupied single-particle state energy (in insulators or LUMO energy in finite systems)","type":"value","value":"energy_reference_lowest_unoccupied"},{"class":"metadata","dtype":"f","mode":"","name":"energy_reference_lowest_unoccupied_iteration","title":"Lowest unoccupied single-particle state energy (in insulators or LUMO energy in finite systems) during the self-consistent field (SCF) iterations.","type":"value","value":"energy_reference_lowest_unoccupied_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_sum_eigenvalues","title":"Sum of the eigenvalues of the Hamiltonian matrix defined by xc_method.","type":"value","value":"energy_sum_eigenvalues"},{"class":"metadata","dtype":"f","mode":"","name":"energy_sum_eigenvalues_per_atom","title":"Value of the energy per atom, where the energy is defined as the sum of the eigenvalues of the Hamiltonian matrix given by xc_method.","type":"value","value":"energy_sum_eigenvalues_per_atom"},{"class":"metadata","dtype":"f","mode":"","name":"energy_sum_eigenvalues_per_atom_scf_iteration","title":"Value of the energy per atom, where the energy is defined as the sum of the eigenvalues of the Hamiltonian matrix given by xc_method, during each self-consistent field (SCF) iteration.","type":"value","value":"energy_sum_eigenvalues_per_atom_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_sum_eigenvalues_scf_iteration","title":"Sum of the eigenvalues of the Hamiltonian matrix defined by xc_method, during each self-consistent field (SCF) iteration.","type":"value","value":"energy_sum_eigenvalues_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_t0_per_atom","title":"Value of the total energy per atom, calculated with the method described in xc_method and extrapolated to $T=0$, based on a free-electron gas argument.","type":"value","value":"energy_t0_per_atom"},{"class":"metadata","dtype":"f","mode":"","name":"energy_total","title":"Value of the total energy, calculated with the method described in xc_method and extrapolated to $T=0$, based on a free-electron gas argument.","type":"value","value":"energy_total"},{"class":"metadata","dtype":"f","mode":"","name":"energy_total_scf_iteration","title":"Value of the total electronic energy calculated with the method described in xc_method during each self-consistent field (SCF) iteration.","type":"value","value":"energy_total_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_total_t0","title":"Value of the total energy (or equivalently free energy), calculated with the method described in xc_method and extrapolated to $T=0$, based on a free-electron gas argument.","type":"value","value":"energy_total_t0"},{"class":"metadata","dtype":"f","mode":"","name":"energy_total_t0_per_atom","title":"Value of the total energy, calculated with the method described in xc_method per atom extrapolated to $T=0$, based on a free-electron gas argument.","type":"value","value":"energy_total_t0_per_atom"},{"class":"metadata","dtype":"f","mode":"","name":"energy_total_t0_per_atom_scf_iteration","title":"Value of the total energy, calculated with the method described in xc_method per atom extrapolated to $T=0$, based on a free-electron gas argument, during each self-consistent field (SCF) iteration.","type":"value","value":"energy_total_t0_per_atom_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_total_t0_scf_iteration","title":"Value of the total energy (or equivalently free energy), calculated with the method described in xc_method and extrapolated to $T=0$, based on a free-electron gas argument, during each self-consistent field (SCF) iteration.","type":"value","value":"energy_total_t0_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_van_der_waals","title":"Value for the converged van der Waals energy calculated using the method described in van_der_waals_method, and used in energy_current. This is the van der Waals method consistent with, e.g., forces used for relaxation or dynamics. Alternative methods are listed in section_energy_van_der_waals.","type":"value","value":"energy_van_der_waals"},{"class":"metadata","dtype":"C","mode":"","name":"energy_van_der_waals_kind","title":"Method used to compute van der Waals energy stored in energy_van_der_waals_value. This metadata is used when more than one van der Waals method is applied in the same *single configuration calculation* (see section_single_configuration_calculation). The method used for van der Waals  (the one consistent with energy_current and, e.g., for evaluating the forces for a relaxation or dynamics) is defined in settings_van_der_waals.","type":"string","value":"energy_van_der_waals_kind"},{"class":"metadata","dtype":"f","mode":"","name":"energy_van_der_waals_value","title":"Value of van der Waals energy, calculated with the method defined in energy_van_der_waals_kind. This metadata is used when more than one van der Waals method is applied in the same *single configuration calculation* (see section_single_configuration_calculation). The value of the van der Waals energy consistent with energy_current and used, e.g., for evaluating the forces for a relaxation or dynamics, is given in energy_van_der_waals and defined in settings_van_der_waals.","type":"value","value":"energy_van_der_waals_value"},{"class":"metadata","dtype":"f","mode":"","name":"energy_x","title":"Value fo the exchange (X) energy calculated with the method described in xc_method.","type":"value","value":"energy_x"},{"class":"metadata","dtype":"f","mode":"","name":"energy_x_mgga","title":"Component of the exchange (X) energy at the GGA (or MetaGGA) level using the self consistent density of the target functional (full unscaled value, i.e., not scaled due to exact-exchange mixing).","type":"value","value":"energy_x_mgga"},{"class":"metadata","dtype":"f","mode":"","name":"energy_x_mgga_scaled","title":"Component of the exchange (X) energy at the GGA (or MetaGGA) level, using the self consistent density of the target functional, scaled accordingly to the mixing parameter.","type":"value","value":"energy_x_mgga_scaled"},{"class":"metadata","dtype":"f","mode":"","name":"energy_xc","title":"Value of the exchange-correlation (XC) energy calculated with the method described in xc_method.","type":"value","value":"energy_xc"},{"class":"metadata","dtype":"f","mode":"","name":"energy_xc_functional","title":"Value of the exchange-correlation (XC) energy calculated with the functional stored in xc_functional.","type":"value","value":"energy_xc_functional"},{"class":"metadata","dtype":"f","mode":"","name":"energy_xc_potential","title":"Value of the exchange-correlation (XC) potential energy: the integral of the first order derivative of the functional stored in xc_functional (integral of v_xc*electron_density), i.e., the component of XC that is in the sum of the eigenvalues. Value associated with the configuration, should be the most converged value.","type":"value","value":"energy_xc_potential"},{"class":"metadata","dtype":"f","mode":"","name":"energy_xc_potential_scf_iteration","title":"Value for exchange-correlation (XC) potential energy: the integral of the first order derivative of the functional stored in xc_functional (integral of v_xc*electron_density), i.e., the component of XC that is in the sum of the eigenvalues. Values are given for each self-consistent field (SCF) iteration (i.e., not the converged value, the latter being stored in energy_xc_potential).","type":"value","value":"energy_xc_potential_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_xc_scf_iteration","title":"Value for exchange-correlation (XC) energy obtained during each self-consistent field (SCF) iteration, using the method described in xc_method.","type":"value","value":"energy_xc_scf_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"energy_zero_point","title":"Value for the converged zero-point vibrations energy calculated using the method described in zero_point_method , and used in energy_current .","type":"value","value":"energy_zero_point"},{"class":"metadata","dtype":"C","mode":"","name":"ensemble_type","title":"Kind of sampled ensemble stored in section_frame_sequence; valid values are defined in [ensemble_type wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/ensemble-type).","type":"string","value":"ensemble_type"},{"class":"metadata","dtype":"i","mode":"","name":"equivalent_atoms_original","title":"Gives a mapping table of atoms to symmetrically independent atoms in the original cell. This is used to find symmetrically equivalent atoms.","type":"value","value":"equivalent_atoms_original"},{"class":"metadata","dtype":"i","mode":"","name":"equivalent_atoms_primitive","title":"Gives a mapping table of atoms to symmetrically independent atoms in the primitive cell. This is used to find symmetrically equivalent atoms.","type":"value","value":"equivalent_atoms_primitive"},{"class":"metadata","dtype":"i","mode":"","name":"equivalent_atoms_std","title":"Gives a mapping table of atoms to symmetrically independent atoms in the standardized cell. This is used to find symmetrically equivalent atoms.","type":"value","value":"equivalent_atoms_std"},{"class":"metadata","dtype":"f","mode":"","name":"excitation_energies","title":"Excitation energies.","type":"value","value":"excitation_energies"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_conserved_quantity","title":"(deprecated) Array containing the values of a quantity that should be conserved,  along a sequence of frames (i.e., a trajectory). A frame is one section_single_configuration_calculation), for example the total energy in the NVE ensemble. If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_conserved_quantity_frames.","type":"value","value":"frame_sequence_conserved_quantity"},{"class":"metadata","dtype":"i","mode":"","name":"frame_sequence_conserved_quantity_frames","title":"Array containing the strictly increasing indices of the frames the frame_sequence_conserved_quantity values refers to. If not given it defaults to the trivial mapping 0,1,...","type":"value","value":"frame_sequence_conserved_quantity_frames"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_conserved_quantity_stats","title":"Average value of energy-like frame_sequence_conserved_quantity, and its standard deviation, over this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation).","type":"value","value":"frame_sequence_conserved_quantity_stats"},{"class":"metadata","dtype":"C","mode":"","name":"frame_sequence_continuation_kind","title":"Type of continuation that has been performed from the previous sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation), upon restart.","type":"string","value":"frame_sequence_continuation_kind"},{"class":"metadata","dtype":"C","mode":"","name":"frame_sequence_external_url","title":"If the energy, forces, and other quantities for the frames (a frame is one section_single_configuration_calculation) in  section_frame_sequence are obtained by calling a different code than the code that drives the sequence (e.g., a wrapper that drives a molecular dynamics, Monte Carlo, geometry optimization and calls an electronic-structure code for energy and forces for each configuration), this metadata holds the reference to where the section_single_configuration_calculation for each frame are located. The format for this reference is described in the [frame_sequence_external_url wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/frame-sequence-external-url).","type":"string","value":"frame_sequence_external_url"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_kinetic_energy","title":"(deprecated) Array containing the values of the kinetic energy along this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation). If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_kinetic_energy_frames.","type":"value","value":"frame_sequence_kinetic_energy"},{"class":"metadata","dtype":"i","mode":"","name":"frame_sequence_kinetic_energy_frames","title":"Array containing the strictly increasing indices referring to the frames of frame_sequence_kinetic_energy. If not given it defaults to the trivial mapping 0,1,...","type":"value","value":"frame_sequence_kinetic_energy_frames"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_kinetic_energy_stats","title":"Average kinetic energy and its standard deviation over this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation).","type":"value","value":"frame_sequence_kinetic_energy_stats"},{"class":"metadata","dtype":"r","mode":"","name":"frame_sequence_local_frames_ref","title":"(deprecated) Reference from each frame (a frame is one section_single_configuration_calculation) in this section_frame_sequence to the corresponding section_single_configuration_calculation. Each section_frame_sequence binds a collection of section_single_configuration_calculation, because they all belong to, e.g., a molecular dynamics trajectory, or geometry optimization. The full information for each frame is stored in section_single_configuration_calculation and this metadata establishes the link for each frame.","type":"value","value":"frame_sequence_local_frames_ref"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_potential_energy","title":"(deprecated) Array containing the value of the potential energy along this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation). This is equal to energy_total of the corresponding section_single_configuration_calculation and repeated here in a summary array for easier access. If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_potential_energy_frames.","type":"value","value":"frame_sequence_potential_energy"},{"class":"metadata","dtype":"i","mode":"","name":"frame_sequence_potential_energy_frames","title":"Array containing the strictly increasing indices referring to the frames of frame_sequence_potential_energy. If not given it defaults to the trivial mapping 0,1,...","type":"value","value":"frame_sequence_potential_energy_frames"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_potential_energy_stats","title":"Average potential energy and its standard deviation over this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation).","type":"value","value":"frame_sequence_potential_energy_stats"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_pressure","title":"(deprecated) Array containing the values of the pressure (one third of the trace of the stress tensor) along this sequence of frames (a frame is one section_single_configuration_calculation). If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_pressure_frames.","type":"value","value":"frame_sequence_pressure"},{"class":"metadata","dtype":"i","mode":"","name":"frame_sequence_pressure_frames","title":"Array containing the strictly increasing indices referring to the frames of frame_sequence_pressure. If not given it defaults to the trivial mapping 0,1,...","type":"value","value":"frame_sequence_pressure_frames"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_pressure_stats","title":"Average pressure (one third of the trace of the stress tensor) and standard deviation over this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation).","type":"value","value":"frame_sequence_pressure_stats"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_temperature","title":"(deprecated) Array containing the values of the instantaneous temperature (a quantity, proportional to frame_sequence_kinetic_energy, whose ensemble average equals the thermodynamic temperature) along this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation). If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_temperature_frames.","type":"value","value":"frame_sequence_temperature"},{"class":"metadata","dtype":"i","mode":"","name":"frame_sequence_temperature_frames","title":"Array containing the strictly increasing indices referring to the frames of frame_sequence_temperature. If not given it defaults to the trivial mapping 0,1,...","type":"value","value":"frame_sequence_temperature_frames"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_temperature_stats","title":"Average temperature and its standard deviation over this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation).","type":"value","value":"frame_sequence_temperature_stats"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_time","title":"Time along this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation). Time start is arbitrary, but when a sequence is a continuation of another time should be continued too.","type":"value","value":"frame_sequence_time"},{"class":"metadata","dtype":"r","mode":"","name":"frame_sequence_to_frames_ref","title":"Reference from each frame (a frame is one section_single_configuration_calculation) in this section_frame_sequence to the corresponding section_single_configuration_calculation. Each section_frame_sequence binds a collection of section_single_configuration_calculation, because they all belong to, e.g., a molecular dynamics trajectory, or geometry optimization. The full information for each frame is stored in section_single_configuration_calculation and this metadata establishes the link for each frame.","type":"value","value":"frame_sequence_to_frames_ref"},{"class":"metadata","dtype":"r","mode":"","name":"frame_sequence_to_sampling_method_ref","title":"Reference from the present section_frame_sequence to the section_sampling_method, that defines the parameters used in this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation).","type":"value","value":"frame_sequence_to_sampling_method_ref"},{"class":"metadata","dtype":"r","mode":"","name":"frame_sequence_to_sampling_ref","title":"(deprecated) Reference from the present section_frame_sequence to the section_sampling_method, that defines the parameters used in this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation).","type":"value","value":"frame_sequence_to_sampling_ref"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_user_quantity","title":"(deprecated) Array containing the values of the user-defined quantity defined in frame_sequence_user_quantity_name, evaluated along this sequence of frames (i.e., trajectory, a frame is one section_single_configuration_calculation). If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_kinetic_energy_frames. If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_kinetic_energy_frames.","type":"value","value":"frame_sequence_user_quantity"},{"class":"metadata","dtype":"i","mode":"","name":"frame_sequence_user_quantity_frames","title":"(deprecated) Array containing the strictly increasing indices referring to the frames of frame_sequence_user_quantity. If not given it defaults to the trivial mapping 0,1,...","type":"value","value":"frame_sequence_user_quantity_frames"},{"class":"metadata","dtype":"C","mode":"","name":"frame_sequence_user_quantity_name","title":"(deprecated) Descriptive name of a user-defined quantity, sampled along this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation). Dedicated metadata are created for the conserved energy-like quantity (frame_sequence_conserved_quantity), the kinetic and potential energies (frame_sequence_kinetic_energy and frame_sequence_potential_energy), the instantaneous temperature (frame_sequence_temperature) and pressure (frame_sequence_pressure). This metadata should be used for other quantities that are monitored along a sequence of frames.","type":"string","value":"frame_sequence_user_quantity_name"},{"class":"metadata","dtype":"f","mode":"","name":"frame_sequence_user_quantity_stats","title":"(deprecated) Average of frame_sequence_user_quantity and its standard deviation in this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation).","type":"value","value":"frame_sequence_user_quantity_stats"},{"class":"metadata","dtype":"f","mode":"","name":"gaussian_basis_group_contractions","title":"Contraction coefficients $c_{i j}$ defining the contracted basis functions with respect to *normalized* primitive Gaussian functions. They define the Gaussian basis functions as described in section_gaussian_basis_group.","type":"value","value":"gaussian_basis_group_contractions"},{"class":"metadata","dtype":"f","mode":"","name":"gaussian_basis_group_exponents","title":"Exponents $\\alpha_j$ of the Gaussian functions defining this basis set $exp(-\\alpha_j r^2)$. One should be careful about the units of the coefficients.","type":"value","value":"gaussian_basis_group_exponents"},{"class":"metadata","dtype":"f","mode":"","name":"gaussian_basis_group_ls","title":"Azimuthal quantum number ($l$) values (of the angular part given by the spherical harmonic $Y_{l m}$ of the various contracted basis functions).","type":"value","value":"gaussian_basis_group_ls"},{"class":"metadata","dtype":"b","mode":"","name":"geometry_optimization_converged","title":"Arrays specify whether a geometry optimization is converged.","type":"value","value":"geometry_optimization_converged"},{"class":"metadata","dtype":"f","mode":"","name":"geometry_optimization_energy_change","title":"Value of threshold for the energy_total change between two geometry optimization steps, as convergence criterion of the geometry_optimization_method. A geometry optimization is considered converged when the energy_total change between two geometry optimization steps is below the threshold (possibly in combination with other criteria)","type":"value","value":"geometry_optimization_energy_change"},{"class":"metadata","dtype":"f","mode":"","name":"geometry_optimization_geometry_change","title":"Value of threshold for the displacement of the nuclei between two geometry optimization steps as convergence criterion of the geometry_optimization_method. A geometry optimization is considered converged when the maximum among the displacements of the nuclei between two geometry optimization steps is below the threshold (possibly in combination with other criteria)","type":"value","value":"geometry_optimization_geometry_change"},{"class":"metadata","dtype":"C","mode":"","name":"geometry_optimization_method","title":"Algorithm for the geometry optimization. Allowed values are listed in the [geometry_optimization_method wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/geometry-optimization-method).","type":"string","value":"geometry_optimization_method"},{"class":"metadata","dtype":"f","mode":"","name":"geometry_optimization_threshold_force","title":"Value of threshold for the force modulus as convergence criterion of the geometry_optimization_method. A geometry optimization is considered converged when the maximum of the moduli of the force on each of the atoms is below this threshold (possibly in combination with other criteria)","type":"value","value":"geometry_optimization_threshold_force"},{"class":"metadata","dtype":"i","mode":"","name":"group_atoms","title":"List of the indexes involved in this group. The fist atom has index 1, the last number_of_topology_atoms.","type":"value","value":"group_atoms"},{"class":"metadata","dtype":"C","mode":"","name":"group_kind","title":"Short and unique name for this group type. Valid names are described in the [group\\_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/group-kind).","type":"string","value":"group_kind"},{"class":"metadata","dtype":"C","mode":"","name":"gw_bare_coulomb_cutofftype","title":"Cutoff type for the calculation of the bare Coulomb potential: none, 0d, 1d, 2d. See Rozzi et al., PRB 73, 205119 (2006)","type":"string","value":"gw_bare_coulomb_cutofftype"},{"class":"metadata","dtype":"f","mode":"","name":"gw_bare_coulomb_gmax","title":"Maximum G for the pw basis for the Coulomb potential.","type":"value","value":"gw_bare_coulomb_gmax"},{"class":"metadata","dtype":"C","mode":"","name":"gw_basis_set","title":"Auxillary basis set used for non-local operators: mixed - mixed basis set, Kotani and Schilfgaarde, Solid State Comm. 121, 461 (2002).","type":"string","value":"gw_basis_set"},{"class":"metadata","dtype":"C","mode":"","name":"gw_core_treatment","title":"It specifies whether the core states are treated in the GW calculation: all - All electron calculation; val - Valence electron only calculation; vab - Core electrons are excluded from the mixed product basis; xal - All electron treatment of the exchange self-energy only","type":"string","value":"gw_core_treatment"},{"class":"metadata","dtype":"f","mode":"","name":"gw_fermi_energy","title":"GW Fermi energy","type":"value","value":"gw_fermi_energy"},{"class":"metadata","dtype":"C","mode":"","name":"gw_frequency_grid_type","title":"Frequency integration grid type for the correlational self energy: 'eqdis' - equidistant frequencies from 0 to freqmax; 'gaulag' - Gauss-Laguerre quadrature from 0 to infinity; 'gauleg' - Gauss-Legendre quadrature from 0 to freqmax; 'gaule2' (default) - double Gauss-Legendre quadrature from 0 to freqmax and from freqmax to infinity.","type":"string","value":"gw_frequency_grid_type"},{"class":"metadata","dtype":"i","mode":"","name":"gw_frequency_number","title":"Number referring to the frequency used in the calculation of the self energy.","type":"value","value":"gw_frequency_number"},{"class":"metadata","dtype":"f","mode":"","name":"gw_frequency_values","title":"Values of the frequency used in the calculation of the self energy.","type":"value","value":"gw_frequency_values"},{"class":"metadata","dtype":"f","mode":"","name":"gw_frequency_weights","title":"Weights of the frequency used in the calculation of the self energy.","type":"value","value":"gw_frequency_weights"},{"class":"metadata","dtype":"f","mode":"","name":"gw_fundamental_gap","title":"GW fundamental band gap","type":"value","value":"gw_fundamental_gap"},{"class":"metadata","dtype":"f","mode":"","name":"gw_max_frequency","title":"Maximum frequency for the calculation of the self energy.","type":"value","value":"gw_max_frequency"},{"class":"metadata","dtype":"f","mode":"","name":"gw_mixed_basis_gmax","title":"Cut-off parameter for the truncation of the expansion of the plane waves in the interstitial region.","type":"value","value":"gw_mixed_basis_gmax"},{"class":"metadata","dtype":"i","mode":"","name":"gw_mixed_basis_lmax","title":"Maximum l value used for the radial functions within the muffin-tin.","type":"value","value":"gw_mixed_basis_lmax"},{"class":"metadata","dtype":"f","mode":"","name":"gw_mixed_basis_tolerance","title":"Eigenvalue threshold below which the egenvectors are discarded in the construction of the radial basis set.","type":"value","value":"gw_mixed_basis_tolerance"},{"class":"metadata","dtype":"i","mode":"","name":"gw_ngridq","title":"K/q-point grid size used in the GW calculation.","type":"value","value":"gw_ngridq"},{"class":"metadata","dtype":"i","mode":"","name":"gw_number_of_frequencies","title":"Number of frequency points used in the calculation of the self energy.","type":"value","value":"gw_number_of_frequencies"},{"class":"metadata","dtype":"f","mode":"","name":"gw_optical_gap","title":"GW optical band gap","type":"value","value":"gw_optical_gap"},{"class":"metadata","dtype":"C","mode":"","name":"gw_qp_equation_treatment","title":"Methods to solve the quasi-particle equation: 'linearization', 'self-consistent'","type":"string","value":"gw_qp_equation_treatment"},{"class":"metadata","dtype":"f","mode":"","name":"gw_qp_linearization_prefactor","title":"Linearization prefactor","type":"value","value":"gw_qp_linearization_prefactor"},{"class":"metadata","dtype":"C","mode":"","name":"gw_screened_coulomb","title":"Model used to calculate the dinamically-screened Coulomb potential: 'rpa' - Full-frequency random-phase approximation; 'ppm' - Godby-Needs plasmon-pole model Godby and Needs, Phys. Rev. Lett. 62, 1169 (1989); 'ppm_hl' - Hybertsen and Louie, Phys. Rev. B 34, 5390 (1986); 'ppm_lh' - von der Linden and P. Horsh, Phys. Rev. B 37, 8351 (1988); 'ppm_fe' - Farid and Engel, Phys. Rev. B 47,15931 (1993); 'cdm' - Contour deformation method, Phys. Rev. B 67, 155208 (2003).)","type":"string","value":"gw_screened_coulomb"},{"class":"metadata","dtype":"C","mode":"","name":"gw_screened_coulomb_volume_average","title":"Type of volume averaging for the dynamically screened Coulomb potential: isotropic - Simple averaging along a specified direction using only diagonal components of the dielectric tensor; anisotropic - Anisotropic screening by C. Freysoldt et al., CPC 176, 1-13 (2007)","type":"string","value":"gw_screened_coulomb_volume_average"},{"class":"metadata","dtype":"f","mode":"","name":"gw_self_energy_c","title":"Diagonal matrix elements of the correlation self-energy","type":"value","value":"gw_self_energy_c"},{"class":"metadata","dtype":"C","mode":"","name":"gw_self_energy_c_analytical_continuation","title":"Models for the correlation self-energy analytical continuation: 'pade' -  Pade's approximant (by H. J. Vidberg and J. W. Serence, J. Low Temp. Phys. 29, 179 (1977)); 'mpf' -  Multi-Pole Fitting (by H. N Rojas, R. W. Godby and R. J. Needs, Phys. Rev. Lett. 74, 1827 (1995)); 'cd' - contour deformation; 'ra' - real axis","type":"string","value":"gw_self_energy_c_analytical_continuation"},{"class":"metadata","dtype":"i","mode":"","name":"gw_self_energy_c_number_of_empty_states","title":"Number of empty states to be used to calculate the correlation self energy.","type":"value","value":"gw_self_energy_c_number_of_empty_states"},{"class":"metadata","dtype":"C","mode":"","name":"gw_self_energy_singularity_treatment","title":"Treatment of the integrable singular terms in the calculation of the self energy. Values: 'mpb' - Auxiliary function method by S. Massidda, M. Posternak, and A. Baldereschi, PRB 48, 5058 (1993); 'crg' - Auxiliary function method by P. Carrier, S. Rohra, and A. Goerling, PRB 75, 205126 (2007).","type":"string","value":"gw_self_energy_singularity_treatment"},{"class":"metadata","dtype":"f","mode":"","name":"gw_self_energy_x","title":"Diagonal matrix elements of the exchange self-energy","type":"value","value":"gw_self_energy_x"},{"class":"metadata","dtype":"C","mode":"","name":"gw_starting_point","title":"Exchange-correlation functional of the ground-state calculation. See xc_functional list at https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/XC-functional","type":"string","value":"gw_starting_point"},{"class":"metadata","dtype":"C","mode":"","name":"gw_type","title":"GW methodology: G0W0; ev-scGW: (eigenvalues self-consistent GW) \u2013 Phys.Rev.B 34, 5390 (1986); qp-scGW: (quasi-particle self-consistent GW) \u2013 Phys. Rev. Lett. 96, 226402 (2006)  scGW0: (self-consistent G with fixed W0) \u2013 Phys.Rev.B 54, 8411 (1996); scG0W: (self-consistent W with fixed G0); scGW: (self-consistent GW) \u2013 Phys. Rev. B 88, 075105 (2013)","type":"string","value":"gw_type"},{"class":"metadata","dtype":"C","mode":"","name":"gw_type_test","title":"GW methodology: exciting test variable","type":"string","value":"gw_type_test"},{"class":"metadata","dtype":"f","mode":"","name":"gw_xc_potential","title":"Diagonal matrix elements of the exchange-correlation potential ","type":"value","value":"gw_xc_potential"},{"class":"metadata","dtype":"i","mode":"","name":"hall_number","title":"The Hall number for this system.","type":"value","value":"hall_number"},{"class":"metadata","dtype":"C","mode":"","name":"hall_symbol","title":"The Hall symbol for this system.","type":"string","value":"hall_symbol"},{"class":"metadata","dtype":"f","mode":"","name":"helmholz_free_energy","title":"Stores the Helmholtz free energy per unit cell at constant volume of a thermodynamic calculation.","type":"value","value":"helmholz_free_energy"},{"class":"metadata","dtype":"f","mode":"","name":"hessian_matrix","title":"The matrix with the second derivative with respect to atom displacements.","type":"value","value":"hessian_matrix"},{"class":"metadata","dtype":"f","mode":"","name":"instant_pressure","title":"The values of the pressure (one third of the trace of the stress tensor) along this frame. If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_pressure_frames.","type":"value","value":"instant_pressure"},{"class":"metadata","dtype":"f","mode":"","name":"instant_temperature","title":"The values of the instantaneous temperature (a quantity, proportional to frame_sequence_kinetic_energy, whose ensemble average equals the thermodynamic temperature) along this frame. If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_temperature_frames.","type":"value","value":"instant_temperature"},{"class":"metadata","dtype":"i","mode":"","name":"interaction_atoms","title":"List of the indexes involved in this interaction. The fist atom has index 1, the last atom index number_of_topology_atoms.","type":"value","value":"interaction_atoms"},{"class":"metadata","dtype":"C","mode":"","name":"interaction_kind","title":"Short and unique name for this interaction type. Valid names are described in the [interaction\\_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/interaction-kind).","type":"string","value":"interaction_kind"},{"class":"metadata","dtype":"D","mode":"","name":"interaction_parameters","title":"Explicit interaction parameters for this kind of interaction (depending on the interaction_kind some might be given implicitly through other means).","type":"value","value":"interaction_parameters"},{"class":"metadata","dtype":"r","mode":"","name":"interaction_to_topology_group_ref","title":"Reference to the topological group of atoms which is used to define contraint on it.","type":"value","value":"interaction_to_topology_group_ref"},{"class":"metadata","dtype":"C","mode":"","name":"international_short_symbol","title":"Specifies the International Union of Crystallography (IUC) short symbol of the 3D space group of this system","type":"string","value":"international_short_symbol"},{"class":"metadata","dtype":"b","mode":"","name":"k_band_path_normalized_is_standard","title":"If the normalized path is along the default path defined in W. Setyawan and S. Curtarolo, [Comput. Mater. Sci. **49**, 299-312 (2010)](http://dx.doi.org/10.1016/j.commatsci.2010.05.010).","type":"value","value":"k_band_path_normalized_is_standard"},{"class":"metadata","dtype":"f","mode":"","name":"k_mesh_points","title":"List of all the k points in the $k$-point mesh. These are the k point used to evaluate energy_total, and are in fractional coordinates (in the basis of the reciprocal-lattice vectors).","type":"value","value":"k_mesh_points"},{"class":"metadata","dtype":"f","mode":"","name":"k_mesh_weights","title":"Weights of all the k points in the $k$-point mesh. These are the weights for k_mesh_points (i.e. the k point used to evaluate energy_total).","type":"value","value":"k_mesh_weights"},{"class":"metadata","dtype":"f","mode":"","name":"kinetic_energy","title":"The values of the kinetic energy along this frame. If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_kinetic_energy_frames.","type":"value","value":"kinetic_energy"},{"class":"metadata","dtype":"f","mode":"","name":"lattice_vectors","title":"Holds the lattice vectors (in Cartesian coordinates) of the simulation cell. The last (fastest) index runs over the $x,y,z$ Cartesian coordinates, and the first index runs over the 3 lattice vectors.","type":"value","value":"lattice_vectors"},{"class":"metadata","dtype":"f","mode":"","name":"lattice_vectors_primitive","title":"Primitive lattice vectors. The vectors are the rows of this matrix.","type":"value","value":"lattice_vectors_primitive"},{"class":"metadata","dtype":"f","mode":"","name":"lattice_vectors_std","title":"Standardized lattice vectors of the conventional cell. The vectors are the rows of this matrix.","type":"value","value":"lattice_vectors_std"},{"class":"metadata","dtype":"f","mode":"","name":"local_rotations","title":"A rotation matrix defining the orientation of each atom. If the rotation matrix only needs to be specified for some atoms, the remaining atoms should set it to the zero matrix (not the identity!)","type":"value","value":"local_rotations"},{"class":"metadata","dtype":"C","mode":"","name":"main_file_uri","title":"Nomad uri identifying the main file corresponding to this calculation","type":"string","value":"main_file_uri"},{"class":"metadata","dtype":"r","mode":"","name":"mapping_section_basis_set_atom_centered","title":"An array of the dimension of number_of_atoms where each atom (identified by the index in the array) is assigned to an atom-centered basis set, for this section_single_configuration_calculation. The actual definition of the atom-centered basis set is in the section_basis_set_atom_centered that is referred to by this metadata.","type":"value","value":"mapping_section_basis_set_atom_centered"},{"class":"metadata","dtype":"r","mode":"","name":"mapping_section_basis_set_cell_dependent","title":"Assignment of the cell-dependent (i.e., non atom centered, e.g., plane-waves) parts of the basis set, which is defined (type, parameters) in section_basis_set_cell_dependent that is referred to by this metadata.","type":"value","value":"mapping_section_basis_set_cell_dependent"},{"class":"metadata","dtype":"r","mode":"","name":"mapping_section_method_basis_set_cell_associated","title":"Reference to a cell-associated basis set.","type":"value","value":"mapping_section_method_basis_set_cell_associated"},{"class":"metadata","dtype":"C","mode":"","name":"message_debug_evaluation","title":"A debugging message of the computational program, associated with a *single configuration calculation* (see section_single_configuration_calculation).","type":"string","value":"message_debug_evaluation"},{"class":"metadata","dtype":"C","mode":"","name":"message_debug_run","title":"A debugging message of the computational program, associated with a run.","type":"string","value":"message_debug_run"},{"class":"metadata","dtype":"C","mode":"","name":"message_error_evaluation","title":"An error message of the computational program, associated with a *single configuration calculation* (see section_single_configuration_calculation).","type":"string","value":"message_error_evaluation"},{"class":"metadata","dtype":"C","mode":"","name":"message_error_run","title":"An error message of the computational program, associated with a run.","type":"string","value":"message_error_run"},{"class":"metadata","dtype":"C","mode":"","name":"message_info_evaluation","title":"An information message of the computational program, associated with a *single configuration calculation* (see section_single_configuration_calculation).","type":"string","value":"message_info_evaluation"},{"class":"metadata","dtype":"C","mode":"","name":"message_info_run","title":"An information message of the computational program, associated with a run.","type":"string","value":"message_info_run"},{"class":"metadata","dtype":"C","mode":"","name":"message_warning_evaluation","title":"A warning message of the computational program.","type":"string","value":"message_warning_evaluation"},{"class":"metadata","dtype":"C","mode":"","name":"message_warning_run","title":"A warning message of the computational program, associated with a run.","type":"string","value":"message_warning_run"},{"class":"metadata","dtype":"i","mode":"","name":"method_atom_kind_atom_number","title":"Atomic number (number of protons) of this atom kind, use 0 if not an atom.","type":"value","value":"method_atom_kind_atom_number"},{"class":"metadata","dtype":"f","mode":"","name":"method_atom_kind_explicit_electrons","title":"Number of explicit electrons (often called valence).","type":"value","value":"method_atom_kind_explicit_electrons"},{"class":"metadata","dtype":"C","mode":"","name":"method_atom_kind_label","title":"String used to identify the atoms of this kind. This should correspond to the atom_labels of the configuration. It is possible for one atom kind to have multiple labels (in order to allow two atoms of the same kind to have two differently defined sets of atom-centered basis functions or two different pseudo-potentials). Atom kind is typically the symbol of the atomic species but it can be also a ghost or pseudo-atom.","type":"string","value":"method_atom_kind_label"},{"class":"metadata","dtype":"f","mode":"","name":"method_atom_kind_mass","title":"Mass of the kind of this kind of atoms.","type":"value","value":"method_atom_kind_mass"},{"class":"metadata","dtype":"C","mode":"","name":"method_atom_kind_pseudopotential_name","title":"Name identifying the pseudopotential used.","type":"string","value":"method_atom_kind_pseudopotential_name"},{"class":"metadata","dtype":"C","mode":"","name":"method_basis_set_kind","title":"String describing the use of the basis set, i.e, if it used for expanding a wavefunction or an electron density. Allowed values are listed in the [basis\\_set\\_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/basis-set-kind).","type":"string","value":"method_basis_set_kind"},{"class":"metadata","dtype":"r","mode":"","name":"method_basis_set_to_atom_centered_ref","title":"Reference to an atom-centered basis set defined in section_basis_set_atom_centered and to the atom kind as defined in section_method_atom_kind.","type":"value","value":"method_basis_set_to_atom_centered_ref"},{"class":"metadata","dtype":"r","mode":"","name":"method_basis_set_to_atom_kind_ref","title":"Reference to an atom-centered basis set defined in section_basis_set_atom_centered and to the atom kind as defined in section_method_atom_kind.","type":"value","value":"method_basis_set_to_atom_kind_ref"},{"class":"metadata","dtype":"C","mode":"","name":"method_to_method_external_url","title":"URL used to reference an externally stored section_method. The kind of relationship between the present and the referenced section_method is specified by method_to_method_kind.","type":"string","value":"method_to_method_external_url"},{"class":"metadata","dtype":"C","mode":"","name":"method_to_method_kind","title":"String defining the kind of relationship that the referenced section_method has with the present section_method. Valid values are described in the [method_to_method_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/method-to-method-kind). Often calculations are connected, for instance, one calculation is a perturbation performed using a self-consistent field (SCF) calculation as starting point, or a simulated system is partitioned in regions with different but connected Hamiltonians (e.g., QM/MM, or a region treated via Kohn-Sham DFT embedded into a region treated via orbital-free DFT). Hence, the need of keeping track of these connected calculations. The referenced section_method is identified via method_to_method_ref (typically used for a section_method in the same section_run) or method_to_method_external_url.","type":"string","value":"method_to_method_kind"},{"class":"metadata","dtype":"r","mode":"","name":"method_to_method_ref","title":"Reference to a local section_method. If both method_to_method_ref and method_to_method_external_url are given, then method_to_method_ref is a local copy of the value contained in method_to_method_external_url. The kind of relationship between the method defined in the present section_method and the referenced one is described by method_to_method_kind.","type":"value","value":"method_to_method_ref"},{"class":"metadata","dtype":"r","mode":"","name":"method_to_topology_ref","title":"Reference to the topology and force fields to be used.","type":"value","value":"method_to_topology_ref"},{"class":"metadata","dtype":"i","mode":"","name":"molecule_constraint_atoms","title":"(deprecated) List of the indexes involved in this constraint. The fist atom has index 1, the last index is number_of_atoms_in_molecule.","type":"value","value":"molecule_constraint_atoms"},{"class":"metadata","dtype":"C","mode":"","name":"molecule_constraint_kind","title":"(deprecated) Short and unique name for this constraint type. Valid names are described in the [constraint\\_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/constraint-kind).","type":"string","value":"molecule_constraint_kind"},{"class":"metadata","dtype":"D","mode":"","name":"molecule_constraint_parameters","title":"(deprecated) Explicit constraint parameters for this kind of constraint (depending on the constraint type some might be given implicitly through other means).","type":"value","value":"molecule_constraint_parameters"},{"class":"metadata","dtype":"i","mode":"","name":"molecule_interaction_atoms","title":"(deprecated) List of the indexes involved in this bonded interaction within a molecule. The first atom has index 1, the last index is number_of_atoms_in_.","type":"value","value":"molecule_interaction_atoms"},{"class":"metadata","dtype":"C","mode":"","name":"molecule_interaction_kind","title":"(deprecated) Short and unique name for this interaction type, used for bonded interactions for atoms in a molecule. Valid names are described in the [interaction\\_kind wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/interaction-kind).","type":"string","value":"molecule_interaction_kind"},{"class":"metadata","dtype":"D","mode":"","name":"molecule_interaction_parameters","title":"(deprecated) Explicit interaction parameters for this kind of interaction (depending on the interaction type some might be given implicitly through other means), used for bonded interactions for atoms in a molecule.","type":"value","value":"molecule_interaction_parameters"},{"class":"metadata","dtype":"r","mode":"","name":"molecule_to_molecule_type_map","title":"(deprecated) Mapping from molecules to molecule types.","type":"value","value":"molecule_to_molecule_type_map"},{"class":"metadata","dtype":"C","mode":"","name":"molecule_type_name","title":"(deprecated) Name of the molecule.","type":"string","value":"molecule_type_name"},{"class":"metadata","dtype":"f","mode":"","name":"number_of_electrons","title":"Number of electrons in system","type":"value","value":"number_of_electrons"},{"class":"metadata","dtype":"i","mode":"","name":"number_of_restricted_uri","title":"The number of restricted uris in restricted_uri list.","type":"value","value":"number_of_restricted_uri"},{"class":"metadata","dtype":"i","mode":"","name":"number_of_restricted_uri_files","title":"The number of restricted files in restricted_uri_files list.","type":"value","value":"number_of_restricted_uri_files"},{"class":"metadata","dtype":"f","mode":"","name":"origin_shift","title":"Vector $\\mathbf{p}$ from the origin of the standardized system to the origin of the original system. Together with the matrix $\\mathbf{P}$, found in space_group_3D_transformation_matrix, the transformation between the standardized coordinates $\\mathbf{x}_s$ and original coordinates $\\mathbf{x}$ is then given by $\\mathbf{x}_s = \\mathbf{P} \\mathbf{x} + \\mathbf{p}$.","type":"value","value":"origin_shift"},{"class":"metadata","dtype":"f","mode":"","name":"oscillator_strengths","title":"Excited states oscillator strengths.","type":"value","value":"oscillator_strengths"},{"class":"metadata","dtype":"C","mode":"","name":"parse_status","title":"Status returned by the first parser that thranslated the main_file_uri","type":"string","value":"parse_status"},{"class":"metadata","dtype":"C","mode":"","name":"parser_id","title":"Id of the parser used to extract this information","type":"string","value":"parser_id"},{"class":"metadata","dtype":"C","mode":"","name":"parser_name","title":"Name of the parser used to extract this information","type":"string","value":"parser_name"},{"class":"metadata","dtype":"C","mode":"","name":"parsing_message_debug_evaluation","title":"This field is used for debugging messages of the parsing program associated with a run, see section_run.","type":"string","value":"parsing_message_debug_evaluation"},{"class":"metadata","dtype":"C","mode":"","name":"parsing_message_debug_run","title":"This field is used for debugging messages of the parsing program associated with a single configuration calculation, see section_single_configuration_calculation.","type":"string","value":"parsing_message_debug_run"},{"class":"metadata","dtype":"C","mode":"","name":"parsing_message_error_run","title":"This field is used for error messages of the parsing program associated with a run, see section_run.","type":"string","value":"parsing_message_error_run"},{"class":"metadata","dtype":"C","mode":"","name":"parsing_message_error_single_configuration","title":"This field is used for error messages of the parsing program associated with a single configuration calculation, see section_single_configuration_calculation.","type":"string","value":"parsing_message_error_single_configuration"},{"class":"metadata","dtype":"C","mode":"","name":"parsing_message_info_run","title":"This field is used for info messages of the parsing program associated with a run, see section_run.","type":"string","value":"parsing_message_info_run"},{"class":"metadata","dtype":"C","mode":"","name":"parsing_message_info_single_configuration","title":"This field is used for info messages of the parsing program associated with a single configuration calculation, see section_single_configuration_calculation.","type":"string","value":"parsing_message_info_single_configuration"},{"class":"metadata","dtype":"C","mode":"","name":"parsing_message_warning_evaluation","title":"This field is used for warning messages of the parsing program associated with a run, see section_run.","type":"string","value":"parsing_message_warning_evaluation"},{"class":"metadata","dtype":"C","mode":"","name":"parsing_message_warning_run","title":"This field is used for warning messages of the parsing program associated with a run, see section_run.","type":"string","value":"parsing_message_warning_run"},{"class":"metadata","dtype":"C","mode":"","name":"point_group","title":"Symbol of the crystallographic point group in the Hermann-Mauguin notation.","type":"string","value":"point_group"},{"class":"metadata","dtype":"f","mode":"","name":"potential_energy","title":"The value of the potential energy along this frame. This is equal to energy_total of the corresponding section_single_configuration_calculation and repeated here in a summary array for easier access. If not all frames have a value the indices of the frames that have a value are stored in frame_sequence_potential_energy_frames.","type":"value","value":"potential_energy"},{"class":"metadata","dtype":"r","mode":"","name":"previous_sequence_ref","title":"Contains a reference to the previous sequence. A sequence is a trajectory, which can have number_of_frames_in_sequence each representing one section_single_configuration_calculation section. If not given, a start from an initial configuration is assumed.","type":"value","value":"previous_sequence_ref"},{"class":"metadata","dtype":"C","mode":"","name":"processor_id","title":"Id (name+version) of the processor that generated or added information to the current calculation.","type":"string","value":"processor_id"},{"class":"metadata","dtype":"i","mode":"","name":"processor_log_event_level","title":"Level of the logging, a lower number has more priority. The levels are the same as log4j: FATAL -> 100, ERROR -> 200, WARN -> 300, INFO -> 400, DEBUG -> 500, TRACE -> 600","type":"value","value":"processor_log_event_level"},{"class":"metadata","dtype":"C","mode":"","name":"processor_log_event_message","title":"The log message","type":"string","value":"processor_log_event_message"},{"class":"metadata","dtype":"C","mode":"","name":"processor_log_processor_id","title":"The processor id of the processor creating this log","type":"string","value":"processor_log_processor_id"},{"class":"metadata","dtype":"C","mode":"","name":"processor_log_start","title":"Start of the log (in ansi notation YYYY-MM-TT...)","type":"string","value":"processor_log_start"},{"class":"metadata","dtype":"i64","mode":"","name":"processor_number_of_evaluated_contexts","title":"Number of contexts evaluated with this processor in the current current calculation.","type":"value","value":"processor_number_of_evaluated_contexts"},{"class":"metadata","dtype":"i64","mode":"","name":"processor_number_of_failed_contexts","title":"Number of contexts in the current current calculation that had failure for this processor.","type":"value","value":"processor_number_of_failed_contexts"},{"class":"metadata","dtype":"i64","mode":"","name":"processor_number_of_skipped_contexts","title":"Number of contexts skipped by this processor in the current current calculation.","type":"value","value":"processor_number_of_skipped_contexts"},{"class":"metadata","dtype":"i64","mode":"","name":"processor_number_of_successful_contexts","title":"Number of contexts in the current calculation that where successfully handled by this processor.","type":"value","value":"processor_number_of_successful_contexts"},{"class":"metadata","dtype":"D","mode":"","name":"processor_version_details","title":"Detailed version information on the processor that generated or added information to the current calculation.","type":"value","value":"processor_version_details"},{"class":"metadata","dtype":"f","mode":"","name":"program_compilation_datetime","title":"Contains the program compilation date and time from *Unix epoch* (00:00:00 UTC on 1 January 1970) in seconds. For date and times without a timezone, the default timezone GMT is used.","type":"value","value":"program_compilation_datetime"},{"class":"metadata","dtype":"C","mode":"","name":"program_compilation_host","title":"Specifies the host on which the program was compiled.","type":"string","value":"program_compilation_host"},{"class":"metadata","dtype":"C","mode":"","name":"program_version","title":"Specifies the version of the program that was used. This should be the version number of an official release, the version tag or a commit id as well as the location of the repository.","type":"string","value":"program_version"},{"class":"metadata","dtype":"C","mode":"","name":"prototype_assignement_method","title":"Method used to identify the prototype","type":"string","value":"prototype_assignement_method"},{"class":"metadata","dtype":"C","mode":"","name":"prototype_label","title":"Label of the prototype identified on the basis of the space_group and normalized_wyckoff. The label is in the same format as in the read_prototypes function: <space_group_number>-<prototype_name>-<Pearson's symbol>).","type":"string","value":"prototype_label"},{"class":"metadata","dtype":"C","mode":"","name":"relativity_method","title":"Describes the relativistic treatment used for the calculation of the final energy and related quantities. If skipped or empty, no relativistic treatment is applied.","type":"string","value":"relativity_method"},{"class":"metadata","dtype":"","mode":"","name":"response_context","title":"The top level context containing the reponse to an api query, when using jsonAPI they are tipically in the meta part","type":"section","value":"response_context"},{"class":"metadata","dtype":"C","mode":"","name":"response_message","title":"Message outputted by the program formatting the data in the current format","type":"string","value":"response_message"},{"class":"metadata","dtype":"i","mode":"","name":"response_message_count","title":"How many times this message was repeated","type":"value","value":"response_message_count"},{"class":"metadata","dtype":"i","mode":"","name":"response_message_level","title":"Level of the message: 0 fatal, 1 error, 2 warning, 3 debug","type":"value","value":"response_message_level"},{"class":"metadata","dtype":"C","mode":"","name":"restricted_uri","title":"The list of nomad uri(s) identifying the restricted info/file corresponding to this calculation","type":"string","value":"restricted_uri"},{"class":"metadata","dtype":"C","mode":"","name":"restricted_uri_end_date","title":"The deadline date of the restriction for the uri or file. The end date can be in date format string for those restrictions set by authors or NOMAD otherwise it is set to 'unlimited' for the restriction related to license.","type":"string","value":"restricted_uri_end_date"},{"class":"metadata","dtype":"C","mode":"","name":"restricted_uri_files","title":"The list of files that are subject to restriction. The files are given with their relative paths to the main_file of parsing.","type":"string","value":"restricted_uri_files"},{"class":"metadata","dtype":"C","mode":"","name":"restricted_uri_issue_authority","title":"The issue authority is the restriction owner for the uri or file. This can be license owner such as 'VASP' or 'AMBER', 'NOMAD', or the author of the uri. For example the repository user name of the author.","type":"string","value":"restricted_uri_issue_authority"},{"class":"metadata","dtype":"C","mode":"","name":"restricted_uri_license","title":"The info of the license that is the reason of restriction.","type":"string","value":"restricted_uri_license"},{"class":"metadata","dtype":"C","mode":"","name":"restricted_uri_reason","title":"The reason of restriction for the uri or file. The reason can be 'propriety license', 'open-source redistribution restricted license', 'other license', or 'author restricted'.","type":"string","value":"restricted_uri_reason"},{"class":"metadata","dtype":"C","mode":"","name":"restricted_uri_restriction","title":"The type of restriction for the uri or file. The type can be 'any access' or 'license permitted'.","type":"string","value":"restricted_uri_restriction"},{"class":"metadata","dtype":"b","mode":"","name":"run_clean_end","title":"Indicates whether this run terminated properly (true), or if it was killed or exited with an error code unequal to zero (false).","type":"value","value":"run_clean_end"},{"class":"metadata","dtype":"D","mode":"","name":"run_hosts","title":"An associative list of host(s) that performed this simulation. This is an associative list that contains program-dependent information (*key*) on how the host was used (*value*). Useful for debugging purposes.","type":"value","value":"run_hosts"},{"class":"metadata","dtype":"C","mode":"","name":"sampling_method","title":"Type of method used to do the sampling.","type":"string","value":"sampling_method"},{"class":"metadata","dtype":"i","mode":"","name":"sampling_method_expansion_order","title":"Order up to which the potential energy surface was expanded in a Taylor series (see sampling_method).","type":"value","value":"sampling_method_expansion_order"},{"class":"metadata","dtype":"i","mode":"","name":"sc_matrix","title":"Specifies the matrix that transforms the unit-cell into the super-cell in which the actual calculation is performed.","type":"value","value":"sc_matrix"},{"class":"metadata","dtype":"f","mode":"","name":"scf_max_iteration","title":"Specifies the maximum number of allowed self-consistent field (SCF) iterations in a calculation run, see section_run.","type":"value","value":"scf_max_iteration"},{"class":"metadata","dtype":"f","mode":"","name":"scf_threshold_energy_change","title":"Specifies the threshold for the energy_total_scf_iteration change between two subsequent self-consistent field (SCF) iterations. The SCF is considered converged when the total-energy change between two SCF cycles is below the threshold (possibly in combination with other criteria).","type":"value","value":"scf_threshold_energy_change"},{"class":"metadata","dtype":"","mode":"","name":"section_atom","title":"Section describing an atom in the system.","type":"section","value":"section_atom"},{"class":"metadata","dtype":"","mode":"","name":"section_atom_projected_dos","title":"Section collecting the information on an atom projected density of states (DOS) evaluation.","type":"section","value":"section_atom_projected_dos"},{"class":"metadata","dtype":"","mode":"","name":"section_atom_type","title":"(deprecated) Section describing a type of atom in the system.","type":"section","value":"section_atom_type"},{"class":"metadata","dtype":"","mode":"","name":"section_atomic_multipoles","title":"Section describing multipoles (charges/monopoles, dipoles, quadrupoles, ...) for each atom.","type":"section","value":"section_atomic_multipoles"},{"class":"metadata","dtype":"","mode":"","name":"section_basis_functions_atom_centered","title":"This section contains the description of the basis functions (at least one function) of the (atom-centered) basis set defined in section_basis_set_atom_centered.","type":"section","value":"section_basis_functions_atom_centered"},{"class":"metadata","dtype":"","mode":"","name":"section_basis_set","title":"This section contains references to *all* basis sets used in this section_single_configuration_calculation. More than one basis set instance per *single configuration calculation* (see section_single_configuration_calculation) may be needed. This is true for example, for codes that implement adaptive basis sets along the self-consistent field (SCF) convergence (e.g., exciting). In such cases, there is a section_basis_set instance per SCF iteration, if necessary. Another example is having a basis set for wavefunctions, a different one for the density, an auxiliary basis set for resolution of identity (RI), etc.\n\nSupported are the two broad classes of basis sets: *atom-centered* (e.g., Gaussian-type, numerical atomic orbitals) and *cell-dependent* (like plane waves or real-space grids, so named because they are typically used for periodic-system calculations and dependent to the simulated cell as a whole).\n\nBasis sets used in this section_single_configuration_calculation, belonging to either class, are defined in the dedicated section: [section_basis_set_cell_dependent ](section_basis_set_cell_dependent) or section_basis_set_atom_centered. The correspondence between the basis sets listed in this section and the definition given in the dedicated sessions is given by the two concrete metadata: mapping_section_basis_set_cell_dependent and mapping_section_basis_set_atom_centered. The latter metadata is a list that connects each atom in the system with its basis set, where the same basis set can be assigned to more than one atom.","type":"section","value":"section_basis_set"},{"class":"metadata","dtype":"","mode":"","name":"section_basis_set_atom_centered","title":"This section describes the atom-centered basis set. The main contained information is a short, non unique but human-interpretable, name for identifying the basis set (basis_set_atom_centered_short_name), a longer, unique name (basis_set_atom_centered_unique_name), the atomic number of the atomic species the basis set is meant for (basis_set_atom_number), and a list of actual basis functions in the section_basis_functions_atom_centered section.","type":"section","value":"section_basis_set_atom_centered"},{"class":"metadata","dtype":"","mode":"","name":"section_basis_set_cell_dependent","title":"Section describing a cell-dependent (atom-independent) basis set, e.g. plane waves. The contained information is the type of basis set (in basis_set_cell_dependent_kind), its parameters (e.g., for plane waves in basis_set_planewave_cutoff), and a name that identifies the actually used basis set (a string combining the type and the parameter(s), stored in basis_set_cell_dependent_name).","type":"section","value":"section_basis_set_cell_dependent"},{"class":"metadata","dtype":"","mode":"","name":"section_calculation_info","title":"Information on this calculation (main file)","type":"section","value":"section_calculation_info"},{"class":"metadata","dtype":"","mode":"","name":"section_calculation_to_calculation_refs","title":"Section that describes the relationship between different section_single_configuration_calculation sections.\n\nFor instance, one calculation is a perturbation performed using a self-consistent field (SCF) calculation as starting point, or a simulated system is partitioned in regions with different but connected Hamiltonians (e.g., QM/MM, or a region treated via Kohn-Sham DFT embedded into a region treated via orbital-free DFT).\n\nThe kind of relationship between the calculation defined in this section and the referenced one is described by calculation_to_calculation_kind. The referenced section_single_configuration_calculation is identified via calculation_to_calculation_ref (typically used for a section_single_configuration_calculation in the same section_run) or calculation_to_calculation_external_url.","type":"section","value":"section_calculation_to_calculation_refs"},{"class":"metadata","dtype":"","mode":"","name":"section_calculation_to_folder_refs","title":"Section that describes the relationship between section_single_configuration_calculationa and the folder containing the original calulations","type":"section","value":"section_calculation_to_folder_refs"},{"class":"metadata","dtype":"","mode":"","name":"section_constraint","title":"Section describing a constraint between arbitrary atoms.","type":"section","value":"section_constraint"},{"class":"metadata","dtype":"","mode":"","name":"section_constraints","title":"Section describing a constraint between arbitrary atoms.","type":"section","value":"section_constraints"},{"class":"metadata","dtype":"","mode":"","name":"section_dft_plus_u_orbital","title":"Section for DFT+U-settings of a single orbital","type":"section","value":"section_dft_plus_u_orbital"},{"class":"metadata","dtype":"","mode":"","name":"section_dos","title":"Section collecting information of a (electronic-energy or vibrational-energy) density of states (DOS) evaluation.","type":"section","value":"section_dos"},{"class":"metadata","dtype":"","mode":"","name":"section_eigenvalues","title":"Section containing (electronic-energy) eigenvalues for one spin channel. If, for example, the eigenvalues of the Kohn-Sham operator are to be stored, a string identifying this kind of eigenvalues is put in eigenvalues_kind, the coordinates of the $k$-points at which the eigenvalues are evaluated is stored in eigenvalues_kpoints, and the energy values of the eigenstates and their occupation is stored in eigenvalues_values and eigenvalues_occupation, respectively.","type":"section","value":"section_eigenvalues"},{"class":"metadata","dtype":"","mode":"","name":"section_energy_code_independent","title":"Section describing a code-independent total energy obtained by subtracting some reference energy calculated with the same code. It contains the type in energy_code_independent_kind and the computed code-independent total energy in energy_code_independent_value. The computed energy allows for comparisons among different codes and numerical settings.","type":"section","value":"section_energy_code_independent"},{"class":"metadata","dtype":"","mode":"","name":"section_energy_van_der_waals","title":"Section containing the Van der Waals energy value (energy_van_der_waals_value) of type van_der_Waals_kind. This is used when more than one Van der Waals methods are applied in the same *single configuration calculation*, see section_single_configuration_calculation. The main Van der Waals method (the one concurring to energy_current, and used, e.g., for evaluating the forces for a relaxation or dynamics) is given in energy_van_der_waals and is defined in settings_van_der_waals.","type":"section","value":"section_energy_van_der_waals"},{"class":"metadata","dtype":"","mode":"","name":"section_excited_states","title":"Excited states properties.","type":"section","value":"section_excited_states"},{"class":"metadata","dtype":"","mode":"","name":"section_frame_sequence","title":"Section containing a sequence of frames, i.e. a trajectory which can have number_of_frames_in_sequence each representing one section_single_configuration_calculation section evaluated with a sampling method (e.g, molecular dynamics, Monte Carlo, geometry optimization). The sampling method might be a subset of the whole trajectory.\n\nInformation on the method used for the sampling can be found in the section_sampling_method section and information of each frame of the sequence are found in the section_single_configuration_calculation section.","type":"section","value":"section_frame_sequence"},{"class":"metadata","dtype":"","mode":"","name":"section_frame_sequence_user_quantity","title":"(deprecated) Section collecting some user-defined quantities evaluated along a sequence of frame.","type":"section","value":"section_frame_sequence_user_quantity"},{"class":"metadata","dtype":"","mode":"","name":"section_gaussian_basis_group","title":"Section that describes a group of Gaussian contractions. Groups allow one to calculate the primitive Gaussian integrals once for several different linear combinations of them. This defines basis functions with radial part $f_i(r) = r^{l_i} \\\\sum_{j} c_{i j} A(l_i, \\\\alpha_j) exp(-\\\\alpha_j r^2)$ where $A(l_i, \\\\alpha_j)$ is a the normalization coefficient for primitive Gaussian basis functions. Here, $\\\\alpha_j$ is defined in gaussian_basis_group_exponents, $l_i$ is given in gaussian_basis_group_ls, and $c_{i j}$ is given in gaussian_basis_group_contractions, whereas the radial part is given by the spherical harmonics $Y_{l m}$.\n\nThis section is defined only if the original basis function uses Gaussian basis functions, and the sequence of radial functions $f_i$ across all section_gaussian_basis_group in section_basis_set_atom_centered should match the one of basis_set_atom_centered_radial_functions.","type":"section","value":"section_gaussian_basis_group"},{"class":"metadata","dtype":"","mode":"","name":"section_group","title":"Section describing a group (pairs, angles, molecules, etc.) between arbitrary atoms.","type":"section","value":"section_group"},{"class":"metadata","dtype":"","mode":"","name":"section_interaction","title":"Section containing the description of a bonded interaction between arbitrary atoms.","type":"section","value":"section_interaction"},{"class":"metadata","dtype":"","mode":"","name":"section_k_band","title":"This section stores information on a $k$-band (electronic or vibrational band structure) evaluation along one-dimensional pathways in the $k$ or $q$ (reciprocal) space given in section_k_band_segment. Eigenvalues calculated at the actual $k$-mesh used for energy_total evaluations, can be found in the section_eigenvalues section.","type":"section","value":"section_k_band"},{"class":"metadata","dtype":"","mode":"","name":"section_k_band_normalized","title":"This section stores information on a normalized $k$-band (electronic band structure) evaluation along one-dimensional pathways in the $k$ (reciprocal) space given in section_k_band_segment. Eigenvalues calculated at the actual $k$-mesh used for energy_total evaluations, can be found in the section_eigenvalues section.","type":"section","value":"section_k_band_normalized"},{"class":"metadata","dtype":"","mode":"","name":"section_k_band_segment","title":"Section collecting the information on a $k$-band or $q$-band segment. This section stores band structures along a one-dimensional pathway in the $k$ or $q$ (reciprocal) space.\n\nEigenvalues calculated at the actual $k$-mesh used for energy_total evaluations are defined in section_eigenvalues and the band structures are represented as third-order tensors: one dimension for the spin channels, one for the sequence of $k$ or $q$ points for the segment (given in number_of_k_points_per_segment), and one for the sequence of eigenvalues at a given $k$ or $q$ point. The values of the $k$ or $q$ points in each segment are stored in band_k_points. The energies and occupation for each eigenstate, at each $k$ or $q$ point, segment, and spin channel are stored in band_energies and band_occupations, respectively. The labels for the segment are specified in band_segm_labels.","type":"section","value":"section_k_band_segment"},{"class":"metadata","dtype":"","mode":"","name":"section_k_band_segment_normalized","title":"Section collecting the information on a normalized $k$-band segment. This section stores band structures along a one-dimensional pathway in the $k$ (reciprocal) space.\n\nEigenvalues calculated at the actual $k$-mesh used for energy_total evaluations are defined in section_eigenvalues and the band structures are represented as third-order tensors: one dimension for the spin channels, one for the sequence of $k$ points for the segment (given in number_of_k_points_per_segment), and one for the sequence of eigenvalues at a given $k$ point. The values of the $k$ points in each segment are stored in band_k_points. The energies and occupation for each eigenstate, at each $k$ point, segment, and spin channel are stored in band_energies and band_occupations, respectively. The labels for the segment are specified in band_segm_labels.","type":"section","value":"section_k_band_segment_normalized"},{"class":"metadata","dtype":"","mode":"","name":"section_method","title":"Section containing the various parameters that define the theory and the approximations (convergence, thresholds,...) to perform a *single configuration calculation*, see section_single_configuration_calculation.\n\n*NOTE*: This section does not contain settings for molecular dynamics, geometry optimization etc. See section frame_sequence for these other settings instead.","type":"section","value":"section_method"},{"class":"metadata","dtype":"","mode":"","name":"section_method_atom_kind","title":"Every section_method_atom_kind section contains method-related information about a kind of atom, and is identified by one or more strings stored in method_atom_kind_label.\n\nThis categorization into atom kinds is more flexible than just atomic species, because to different atoms of the same species different atom-centered basis sets or pseudo-potentials may be assigned. For instance, if two different oxygen atoms are assigned to different basis sets or pseudo-potentials, they have to distinguished into two different *kinds* of O atoms, by creating two distinct section_method_atom_kind sections.","type":"section","value":"section_method_atom_kind"},{"class":"metadata","dtype":"","mode":"","name":"section_method_basis_set","title":"This section contains the definition of the basis sets that are defined independently of the atomic configuration.","type":"section","value":"section_method_basis_set"},{"class":"metadata","dtype":"","mode":"","name":"section_method_to_method_refs","title":"Section that describes the relationship between different section_method sections.\n\nFor instance, one calculation is a perturbation performed using a self-consistent field (SCF) calculation as starting point, or a simulated system is partitioned in regions with different but connected Hamiltonians (e.g., QM/MM, or a region treated via Kohn-Sham DFT embedded into a region treated via orbital-free DFT).\n\nThe kind of relationship between the method defined in this section and the referenced one is described by method_to_method_kind. The referenced section section_method is identified via method_to_method_ref (typically used for a section_method section in the same section_run) or method_to_method_external_url.","type":"section","value":"section_method_to_method_refs"},{"class":"metadata","dtype":"","mode":"","name":"section_molecule_constraint","title":"(deprecated) Section describing a constraint between atoms within a molecule.","type":"section","value":"section_molecule_constraint"},{"class":"metadata","dtype":"","mode":"","name":"section_molecule_interaction","title":"(deprecated) Section describing a bonded interaction between atoms within a molecule.","type":"section","value":"section_molecule_interaction"},{"class":"metadata","dtype":"","mode":"","name":"section_molecule_type","title":"(deprecated) Section describing a type of molecule in the system.","type":"section","value":"section_molecule_type"},{"class":"metadata","dtype":"","mode":"","name":"section_original_system","title":"Section containing symmetry information that is specific to the original system.","type":"section","value":"section_original_system"},{"class":"metadata","dtype":"","mode":"","name":"section_primitive_system","title":"Section containing symmetry information that is specific to the primitive system. The primitive system is derived from the standardized system with a transformation that is specific to the centring. The transformation matrices can be found e.g. from here: https://atztogo.github.io/spglib/definition.html#transformation-to-the-primitive-cell","type":"section","value":"section_primitive_system"},{"class":"metadata","dtype":"","mode":"","name":"section_processor_info","title":"Section with information about a processor that generated or added information to the current calculation.","type":"section","value":"section_processor_info"},{"class":"metadata","dtype":"","mode":"","name":"section_processor_log","title":"Log of a processor","type":"section","value":"section_processor_log"},{"class":"metadata","dtype":"","mode":"","name":"section_processor_log_event","title":"A log event","type":"section","value":"section_processor_log_event"},{"class":"metadata","dtype":"","mode":"","name":"section_prototype","title":"Information on the prototype corresponding to the current section.","type":"section","value":"section_prototype"},{"class":"metadata","dtype":"","mode":"","name":"section_response_message","title":"Messages outputted by the program formatting the data in the current response","type":"section","value":"section_response_message"},{"class":"metadata","dtype":"","mode":"","name":"section_restricted_uri","title":"Restricted URIs on this calculation (Coverage: any info or files that are related with this calculation can be subject to restriction)","type":"section","value":"section_restricted_uri"},{"class":"metadata","dtype":"","mode":"","name":"section_run","title":"Every section_run represents a single call of a program. What exactly is contained in a run depends on the run type (see for example section_method and section_single_configuration_calculation) and the program (see [program_info ](program_info)).","type":"section","value":"section_run"},{"class":"metadata","dtype":"","mode":"","name":"section_sampling_method","title":"Section containing the settings describing a (potential-energy surface) sampling method.\n\nResults and monitored quantities of such sampling are collected in a sequence of frames, section_frame_sequence.","type":"section","value":"section_sampling_method"},{"class":"metadata","dtype":"","mode":"","name":"section_scf_iteration","title":"Every section_scf_iteration represents a self-consistent field (SCF) iteration, see scf_info, and gives detailed information on the SCF procedure of the specified quantities.","type":"section","value":"section_scf_iteration"},{"class":"metadata","dtype":"","mode":"","name":"section_single_configuration_calculation","title":"Every section_single_configuration_calculation section contains the values computed during a *single configuration calculation*, i.e. a calculation performed on a given configuration of the system (as defined in section_system) and a given computational method (e.g., exchange-correlation method, basis sets, as defined in section_method).\n\nThe link between the current section_single_configuration_calculation and the related section_system and section_method sections is established by the values stored in single_configuration_calculation_to_system_ref and single_configuration_to_calculation_method_ref, respectively.\n\nThe reason why information on the system configuration and computational method is stored separately is that several *single configuration calculations* can be performed on the same system configuration, viz. several system configurations can be evaluated with the same computational method. This storage strategy avoids redundancies.","type":"section","value":"section_single_configuration_calculation"},{"class":"metadata","dtype":"","mode":"","name":"section_soap","title":"Stores a soap descriptor for this configuration.","type":"section","value":"section_soap"},{"class":"metadata","dtype":"","mode":"","name":"section_soap_coefficients","title":"Stores the soap coefficients for the pair of atoms given in soap_coefficients_atom_pair.","type":"section","value":"section_soap_coefficients"},{"class":"metadata","dtype":"","mode":"","name":"section_species_projected_dos","title":"Section collecting the information on a species-projected density of states (DOS) evaluation.","type":"section","value":"section_species_projected_dos"},{"class":"metadata","dtype":"","mode":"","name":"section_springer_classification","title":"Section_springer_classification contains a classification tag of a material according to Springer Materials","type":"section","value":"section_springer_classification"},{"class":"metadata","dtype":"","mode":"","name":"section_springer_compound_class","title":"Description of a compound class (according to Springer Materials) of the current material. This is a property of the chemical formula of the compound","type":"section","value":"section_springer_compound_class"},{"class":"metadata","dtype":"","mode":"","name":"section_springer_id","title":"Identifiers used by Springer Materials","type":"section","value":"section_springer_id"},{"class":"metadata","dtype":"","mode":"","name":"section_springer_material","title":"Every section_springer_material contains results of classification of materials with the same formula according to Springer Materials - it contains section_springer_classsification, section_springer_compound, section_springer_id, section_springer_references","type":"section","value":"section_springer_material"},{"class":"metadata","dtype":"","mode":"","name":"section_springer_references","title":"Contains the information about references related to current material according to Springer Materials","type":"section","value":"section_springer_references"},{"class":"metadata","dtype":"","mode":"","name":"section_std_system","title":"Section containing symmetry information that is specific to the standardized system. The standardized system is defined as given by spglib and the details can be found from https://arxiv.org/abs/1506.01455","type":"section","value":"section_std_system"},{"class":"metadata","dtype":"","mode":"","name":"section_stress_tensor","title":"Section collecting alternative values to stress_tensor that have been calculated.\n\nThis section allows the storage of multiple definitions and evaluated values of the stress tensor, while only one definition is used for, e.g., molecular dynamics or geometry optimization (if needed).","type":"section","value":"section_stress_tensor"},{"class":"metadata","dtype":"","mode":"","name":"section_symmetry","title":"Section containing information about the symmetry properties of the system.","type":"section","value":"section_symmetry"},{"class":"metadata","dtype":"","mode":"","name":"section_system","title":"Every section_system contains all needed properties required to describe the simulated physical system, e.g. the given atomic configuration, the definition of periodic cell (if present), the external potentials and other parameters.","type":"section","value":"section_system"},{"class":"metadata","dtype":"","mode":"","name":"section_system_to_system_refs","title":"Section that describes the relationship between different section_system sections.\n\nFor instance, if a phonon calculation using a finite difference approach is performed the force evaluation is typically done in a larger supercell but the properties such as the phonon band structure are still calculated for the primitive cell.\n\nThe kind of relationship between the system defined in this section and the referenced one is described by system_to_system_kind. The referenced section_system is identified via system_to_system_ref.","type":"section","value":"section_system_to_system_refs"},{"class":"metadata","dtype":"","mode":"","name":"section_thermodynamical_properties","title":"Section that defines thermodynamical properties about the system in a section_frame_sequence.","type":"section","value":"section_thermodynamical_properties"},{"class":"metadata","dtype":"","mode":"","name":"section_topology","title":"Section containing the definition of topology (connectivity among atoms) of a system.","type":"section","value":"section_topology"},{"class":"metadata","dtype":"","mode":"","name":"section_user_quantity","title":"Section collecting some user-defined quantities evaluated along a sequence of frame.","type":"section","value":"section_user_quantity"},{"class":"metadata","dtype":"","mode":"","name":"section_user_quantity_definition","title":"Section collecting some user-defined quantities evaluated along a sequence of frame.","type":"section","value":"section_user_quantity_definition"},{"class":"metadata","dtype":"","mode":"","name":"section_volumetric_data","title":"Section defining a set of volumetric data on a uniform real-space\ngrid.\n\nTo store an array (e.g. a density or a potential), define:\n * three grid point displacement vectors (\"displacements\")\n * number of grid points along each axis (\"nx\", \"ny\" and \"nz\")\n * the origin of the coordinate system, i.e. coordinates of the first grid\n   point (\"origin\")\n * how many spatial functions are represented, e.g., two for a\n   normal spin-polarized density (\"multiplicity\")\n * the values for each grid point (\"values\")\n * the unit that applies to each value (\"units\")\n * the kind of array represented by the volumetric data (\"kind\").\n\nAllowed kinds are (please add new kinds as necessary): \"density\",\n\"potential_hartree\" and \"potential_effective\".  Densities and\npotentials that are spin-polarized should have multiplicity two.\nRules for more complex spins are to be decided when necessary.","type":"section","value":"section_volumetric_data"},{"class":"metadata","dtype":"","mode":"","name":"section_xc_functionals","title":"Section containing one of the exchange-correlation (XC) functionals for the present section_method that are combined to form the xc_functional.","type":"section","value":"section_xc_functionals"},{"class":"metadata","dtype":"C","mode":"","name":"self_interaction_correction_method","title":"Contains the name for the self-interaction correction (SIC) treatment used to calculate the final energy and related quantities. If skipped or empty, no special correction is applied.","type":"string","value":"self_interaction_correction_method"},{"class":"metadata","dtype":"C","mode":"","name":"shortened_meta_info","title":"A meta info whose corresponding data has been shortened","type":"string","value":"shortened_meta_info"},{"class":"metadata","dtype":"f","mode":"","name":"simulation_cell","title":"DEPRECATED, use lattice_vectors instead. Holds the lattice vectors (in Cartesian coordinates) of the simulation cell. The last (fastest) index runs over the $x,y,z$ Cartesian coordinates, and the first index runs over the 3 lattice vectors.","type":"value","value":"simulation_cell"},{"class":"metadata","dtype":"b","mode":"","name":"single_configuration_calculation_converged","title":"Determines whether a *single configuration calculation* in section_single_configuration_calculation is converged.","type":"value","value":"single_configuration_calculation_converged"},{"class":"metadata","dtype":"r","mode":"","name":"single_configuration_calculation_to_constraints_ref","title":"Reference to the constraints used for this system.","type":"value","value":"single_configuration_calculation_to_constraints_ref"},{"class":"metadata","dtype":"r","mode":"","name":"single_configuration_calculation_to_method_ref","title":"Reference to the method used for the calculation in section_single_configuration_calculation.","type":"value","value":"single_configuration_calculation_to_method_ref"},{"class":"metadata","dtype":"r","mode":"","name":"single_configuration_calculation_to_system_ref","title":"Reference to the system (atomic configuration, cell, ...) that is calculated in section_single_configuration_calculation.","type":"value","value":"single_configuration_calculation_to_system_ref"},{"class":"metadata","dtype":"r","mode":"","name":"single_configuration_calculation_to_topology_ref","title":"Reference to the topology used for this system.","type":"value","value":"single_configuration_calculation_to_topology_ref"},{"class":"metadata","dtype":"r","mode":"","name":"single_configuration_to_calculation_method_ref","title":"(deprecated) Reference to the method used for the calculation in section_single_configuration_calculation.","type":"value","value":"single_configuration_to_calculation_method_ref"},{"class":"metadata","dtype":"C","mode":"","name":"smearing_kind","title":"Specifies the kind of smearing on the electron occupation used to calculate the free energy (see energy_free)","type":"string","value":"smearing_kind"},{"class":"metadata","dtype":"f","mode":"","name":"smearing_width","title":"Specifies the width of the smearing in energy for the electron occupation used to calculate the free energy (see energy_free).\n\n*NOTE:* Not all methods specified in smearing_kind uses this value.","type":"value","value":"smearing_width"},{"class":"metadata","dtype":"i","mode":"","name":"soap_angular_basis_l","title":"Angular basis L","type":"value","value":"soap_angular_basis_l"},{"class":"metadata","dtype":"C","mode":"","name":"soap_angular_basis_type","title":"Angular basis type","type":"string","value":"soap_angular_basis_type"},{"class":"metadata","dtype":"f","mode":"","name":"soap_coefficients","title":"Compressed coefficient of the soap descriptor for the atom pair soap_coefficients_atom_pair","type":"value","value":"soap_coefficients"},{"class":"metadata","dtype":"C","mode":"","name":"soap_coefficients_atom_pair","title":"Pair of atoms described in the current section","type":"string","value":"soap_coefficients_atom_pair"},{"class":"metadata","dtype":"C","mode":"","name":"soap_kernel_adaptor","title":"Kernel adaptor","type":"string","value":"soap_kernel_adaptor"},{"class":"metadata","dtype":"C","mode":"","name":"soap_parameters_gid","title":"Unique checksum of all the soap parameters (all those with abstract type soap_parameter) with prefix psoap","type":"string","value":"soap_parameters_gid"},{"class":"metadata","dtype":"i","mode":"","name":"soap_radial_basis_integration_steps","title":"Radial basis integration steps","type":"value","value":"soap_radial_basis_integration_steps"},{"class":"metadata","dtype":"C","mode":"","name":"soap_radial_basis_mode","title":"Radial basis mode","type":"string","value":"soap_radial_basis_mode"},{"class":"metadata","dtype":"i","mode":"","name":"soap_radial_basis_n","title":"Radial basis N","type":"value","value":"soap_radial_basis_n"},{"class":"metadata","dtype":"f","mode":"","name":"soap_radial_basis_sigma","title":"Radial basis sigma","type":"value","value":"soap_radial_basis_sigma"},{"class":"metadata","dtype":"C","mode":"","name":"soap_radial_basis_type","title":"Radial basis type","type":"string","value":"soap_radial_basis_type"},{"class":"metadata","dtype":"f","mode":"","name":"soap_radial_cutoff_center_weight","title":"Radial cutoff center weight","type":"value","value":"soap_radial_cutoff_center_weight"},{"class":"metadata","dtype":"f","mode":"","name":"soap_radial_cutoff_rc","title":"Radial cutoff","type":"value","value":"soap_radial_cutoff_rc"},{"class":"metadata","dtype":"i","mode":"","name":"soap_radial_cutoff_rc_width","title":"Radial cutoff width","type":"value","value":"soap_radial_cutoff_rc_width"},{"class":"metadata","dtype":"C","mode":"","name":"soap_radial_cutoff_type","title":"Radial cutoff type","type":"string","value":"soap_radial_cutoff_type"},{"class":"metadata","dtype":"b","mode":"","name":"soap_spectrum_2l1_norm","title":"2l1 norm spectrum","type":"value","value":"soap_spectrum_2l1_norm"},{"class":"metadata","dtype":"b","mode":"","name":"soap_spectrum_global","title":"Global spectrum","type":"value","value":"soap_spectrum_global"},{"class":"metadata","dtype":"b","mode":"","name":"soap_spectrum_gradients","title":"Gradients in specturm","type":"value","value":"soap_spectrum_gradients"},{"class":"metadata","dtype":"C","mode":"","name":"soap_type_list","title":"Type list","type":"string","value":"soap_type_list"},{"class":"metadata","dtype":"C","mode":"","name":"source_id","title":"Identifier used in the source of this calculation. This is an uri like string, with a prefix identifying the source. For example `aflow:<aflow_uid>, `oqmd:<>`, `materials-project:<>`...","type":"string","value":"source_id"},{"class":"metadata","dtype":"C","mode":"","name":"source_link","title":"Link to a webpage describing the object, material,... within the project that calculated this  of this calculation. For example a link to aflow lib calculation, oqmd or material project material","type":"string","value":"source_link"},{"class":"metadata","dtype":"f","mode":"","name":"species_projected_dos_energies","title":"Contains the set of discrete energy values for the species-projected density of states (DOS).","type":"value","value":"species_projected_dos_energies"},{"class":"metadata","dtype":"f","mode":"","name":"species_projected_dos_energies_normalized","title":"Contains the set of discrete energy values with respect to the top of the valence band for the species-projected density of states (DOS). It is derived from the species_projected_dos_energies species field.","type":"value","value":"species_projected_dos_energies_normalized"},{"class":"metadata","dtype":"i","mode":"","name":"species_projected_dos_lm","title":"Consists of tuples of $l$ and $m$ values for all given values in the species_projected_dos_values_lm species field.\n\nThe quantum number $l$ represents the azimuthal quantum number, whereas for the quantum number $m$, besides the conventional use as magnetic quantum number ($l+1$ integer values from $-l$ to $l$), a set of different conventions is accepted. The adopted convention is specified by atom_projected_dos_m_kind.","type":"value","value":"species_projected_dos_lm"},{"class":"metadata","dtype":"C","mode":"","name":"species_projected_dos_m_kind","title":"Specifies the kind of the integer numbers $m$ used in species_projected_dos_lm.\n\nAllowed values are listed in the [m_kind wiki page](https://gitlab.rzg.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/m-kind) and can be (quantum) numbers of\n\n  * spherical\n  * polynomial\n  * real_orbital\n  * integrated\n\nfunctions or values.","type":"string","value":"species_projected_dos_m_kind"},{"class":"metadata","dtype":"C","mode":"","name":"species_projected_dos_species_label","title":"Contains labels of the atomic species for the species-projected density of states (DOS).\n\nDifferently from atom_labels, which allow more than one label for the same atomic species (by adding a number or a string to the label), this list is expected to refer to actual atomic species, i.e. belonging to the periodic table of elements. Thus, the species-projected DOS are expected to be as many as the different atomic species in the system.","type":"string","value":"species_projected_dos_species_label"},{"class":"metadata","dtype":"f","mode":"","name":"species_projected_dos_values_lm","title":"Holds species-projected density of states (DOS) values, divided into contributions from each $l,m$ channel.\n\nHere, there are as many species-projected DOS as the number of species, number_of_species. The list of labels of the species is given in species_projected_dos_species_label.","type":"value","value":"species_projected_dos_values_lm"},{"class":"metadata","dtype":"f","mode":"","name":"species_projected_dos_values_total","title":"Holds species-projected density of states (DOS) values, summed up over all azimuthal quantum numbers $l$.\n\nHere, there are as many species-projected DOS as the number of species, number_of_species. The list of labels of the species is given in species_projected_dos_species_label.","type":"value","value":"species_projected_dos_values_total"},{"class":"metadata","dtype":"f","mode":"","name":"spin_s2","title":"Stores the value of the total spin moment operator $S^2$ for the converged wavefunctions calculated with the xc_method. It can be used to calculate the spin contamination in spin-unrestricted calculations.","type":"value","value":"spin_s2"},{"class":"metadata","dtype":"f","mode":"","name":"spin_s2_scf_iteration","title":"Stores the value of the total spin moment operator $S^2$ during the self-consistent field (SCF) iterations of the xc_method. It can be used to calculate the spin contamination in spin-unrestricted calculations.","type":"value","value":"spin_s2_scf_iteration"},{"class":"metadata","dtype":"i","mode":"","name":"spin_target_multiplicity","title":"Stores the target (user-imposed) value of the spin multiplicity $M=2S+1$, where $S$ is the total spin. It is an integer number. This value is not necessarily the value obtained at the end of the calculation. See spin_s2 for the converged value of the spin moment.","type":"value","value":"spin_target_multiplicity"},{"class":"metadata","dtype":"C","mode":"","name":"springer_compound_class","title":"Name of a class of the current compound, as defined in by Springer Materials. This is a property of the chemical formula of the compound","type":"string","value":"springer_compound_class"},{"class":"metadata","dtype":"C","mode":"","name":"springer_formula","title":"The formula of current material according to Springer Materials","type":"string","value":"springer_formula"},{"class":"metadata","dtype":"i","mode":"","name":"springer_number_of_classification_reference_per_material","title":"Number of publications/references using this classification for the current material in the Springer Materials database","type":"value","value":"springer_number_of_classification_reference_per_material"},{"class":"metadata","dtype":"i","mode":"","name":"springer_number_of_compound_class_reference_per_material","title":"Number of publications/references using this compound class for the current compound in the Springer Materials database","type":"value","value":"springer_number_of_compound_class_reference_per_material"},{"class":"metadata","dtype":"C","mode":"","name":"springer_reference","title":"Contains the information about references related to current material according to Springer Materials","type":"string","value":"springer_reference"},{"class":"metadata","dtype":"i","mode":"","name":"springer_space_group_number","title":"Information about the space group number of current material according to Springer Materials","type":"value","value":"springer_space_group_number"},{"class":"metadata","dtype":"C","mode":"","name":"springer_url","title":"Url to the source page in Springer Materials describing the current entry","type":"string","value":"springer_url"},{"class":"metadata","dtype":"f","mode":"","name":"stress_tensor","title":"Stores the final value of the default stress tensor consistent with energy_total and calculated with the method specified in stress_tensor_method.\n\nThis value is used (if needed) for, e.g., molecular dynamics and geometry optimization. Alternative definitions of the stress tensor can be assigned with stress_tensor_kind","type":"value","value":"stress_tensor"},{"class":"metadata","dtype":"C","mode":"","name":"stress_tensor_kind","title":"Specifies the method used to compute the stress tensor stored in stress_tensor_value. This is an *alternative* to the stress tensor defined in stress_tensor_method, which is stored in stress_tensor.\n\nThis field allows for multiple definitions and evaluated values of the stress tensor, while only one definition is used for, e.g., molecular dynamics and geometry optimization.","type":"string","value":"stress_tensor_kind"},{"class":"metadata","dtype":"C","mode":"","name":"stress_tensor_method","title":"Specifies the method used to calculate stress_tensor for, e.g., molecular dynamics and geometry optimization.\n\nThe allowed values are:\n\n  * numeric\n  * analytic","type":"string","value":"stress_tensor_method"},{"class":"metadata","dtype":"f","mode":"","name":"stress_tensor_value","title":"Contains the value of the stress tensor of the kind defined in stress_tensor_kind. This is an *alternative* to the stress tensor defined in stress_tensor_method.\n\nThis field allows for multiple definitions and evaluated values of the stress tensor, while only one definition is used for, e.g., molecular dynamics and geometry optimization.","type":"value","value":"stress_tensor_value"},{"class":"metadata","dtype":"C","mode":"","name":"symmetry_method","title":"Identifies the source of the symmetry information contained within this section. If equal to 'spg_normalized' the information comes from a normalization step.","type":"string","value":"symmetry_method"},{"class":"metadata","dtype":"b","mode":"","name":"symmorphic","title":"Is the space group symmorphic? Set to True if all translations are zero.","type":"value","value":"symmorphic"},{"class":"metadata","dtype":"b","mode":"","name":"system_configuration_consistent","title":"Flag set is the configuration is consistent","type":"value","value":"system_configuration_consistent"},{"class":"metadata","dtype":"C","mode":"","name":"system_name","title":"Specifies the name of the system. This information is provided by the user in some codes and is stored here for debugging or visualization purposes.","type":"string","value":"system_name"},{"class":"metadata","dtype":"C","mode":"","name":"system_to_system_kind","title":"String defining the relationship between the referenced section_system and the present section_system. Often systems are connected for example if a phonon calculation using finite differences is performed the force ealuation is done in a larger supercell but properties such as the phonon band structure are still calculated for the primitive cell. Hence, the need of keeping track of these connected systems. The referenced system is identified via system_to_system_ref.","type":"string","value":"system_to_system_kind"},{"class":"metadata","dtype":"r","mode":"","name":"system_to_system_ref","title":"Reference to another system. The kind of relationship between the present and the referenced section_system is specified by system_to_system_kind.","type":"value","value":"system_to_system_ref"},{"class":"metadata","dtype":"C","mode":"","name":"thermodynamical_properties_calculation_method","title":"Method used to calculate the thermodynamic quantities.\n\nValid values:\n\n  * harmonic","type":"string","value":"thermodynamical_properties_calculation_method"},{"class":"metadata","dtype":"f","mode":"","name":"thermodynamical_property_heat_capacity_c_v","title":"Stores the heat capacity per cell unit at constant volume.","type":"value","value":"thermodynamical_property_heat_capacity_c_v"},{"class":"metadata","dtype":"f","mode":"","name":"thermodynamical_property_temperature","title":"Specifies the temperatures at which properties such as the Helmholtz free energy are calculated.","type":"value","value":"thermodynamical_property_temperature"},{"class":"metadata","dtype":"f","mode":"","name":"time_calculation","title":"Stores the wall-clock time needed for a calculation using calculation_method_current. Basically, it tracks the real time that has been elapsed from start to end.","type":"value","value":"time_calculation"},{"class":"metadata","dtype":"b","mode":"","name":"time_reversal_symmetry","title":"Is time-reversal symmetry present?","type":"value","value":"time_reversal_symmetry"},{"class":"metadata","dtype":"f","mode":"","name":"time_run_cpu1_end","title":"Stores the end time of the run on CPU 1.","type":"value","value":"time_run_cpu1_end"},{"class":"metadata","dtype":"f","mode":"","name":"time_run_cpu1_start","title":"Stores the start time of the run on CPU 1.","type":"value","value":"time_run_cpu1_start"},{"class":"metadata","dtype":"f","mode":"","name":"time_run_date_end","title":"Stores the end date of the run as time since the *Unix epoch* (00:00:00 UTC on 1 January 1970) in seconds. For date and times without a timezone, the default timezone GMT is used.","type":"value","value":"time_run_date_end"},{"class":"metadata","dtype":"f","mode":"","name":"time_run_date_start","title":"Stores the start date of the run as time since the *Unix epoch* (00:00:00 UTC on 1 January 1970) in seconds. For date and times without a timezone, the default timezone GMT is used.","type":"value","value":"time_run_date_start"},{"class":"metadata","dtype":"f","mode":"","name":"time_run_wall_end","title":"Stores the internal wall-clock time at the end of the run.","type":"value","value":"time_run_wall_end"},{"class":"metadata","dtype":"f","mode":"","name":"time_run_wall_start","title":"Stores the internal wall-clock time from the start of the run.","type":"value","value":"time_run_wall_start"},{"class":"metadata","dtype":"f","mode":"","name":"time_scf_iteration_cpu1_end","title":"Stores the end time of a self-consistent field (SCF) iteration on CPU 1.","type":"value","value":"time_scf_iteration_cpu1_end"},{"class":"metadata","dtype":"f","mode":"","name":"time_scf_iteration_cpu1_start","title":"Stores the start time of a self-consistent field (SCF) iteration on CPU 1.","type":"value","value":"time_scf_iteration_cpu1_start"},{"class":"metadata","dtype":"f","mode":"","name":"time_scf_iteration_date_end","title":"Stores the end date of a self-consistent field (SCF) iteration as time since the *Unix epoch* (00:00:00 UTC on 1 January 1970) in seconds. For date and times without a timezone, the default timezone GMT is used.","type":"value","value":"time_scf_iteration_date_end"},{"class":"metadata","dtype":"f","mode":"","name":"time_scf_iteration_date_start","title":"Stores the start date of a self-consistent field (SCF) iteration as time since the *Unix epoch* (00:00:00 UTC on 1 January 1970) in seconds. For date and times without a timezone, the default timezone GMT is used.","type":"value","value":"time_scf_iteration_date_start"},{"class":"metadata","dtype":"f","mode":"","name":"time_scf_iteration_wall_end","title":"Stores the internal wall-clock time at the end of a self-consistent field (SCF) iteration.","type":"value","value":"time_scf_iteration_wall_end"},{"class":"metadata","dtype":"f","mode":"","name":"time_scf_iteration_wall_start","title":"Stores the internal wall-clock time from the start of a self-consistent field (SCF) iteration.","type":"value","value":"time_scf_iteration_wall_start"},{"class":"metadata","dtype":"f","mode":"","name":"time_single_configuration_calculation_cpu1_end","title":"Stores the end time of the *single configuration calculation* (see section_single_configuration_calculation) on CPU 1.","type":"value","value":"time_single_configuration_calculation_cpu1_end"},{"class":"metadata","dtype":"f","mode":"","name":"time_single_configuration_calculation_cpu1_start","title":"Stores the start time of the *single configuration calculation* (see section_single_configuration_calculation) on CPU 1.","type":"value","value":"time_single_configuration_calculation_cpu1_start"},{"class":"metadata","dtype":"f","mode":"","name":"time_single_configuration_calculation_date_end","title":"Stores the end date of the *single configuration calculation* (see section_single_configuration_calculation) as time since the *Unix epoch* (00:00:00 UTC on 1 January 1970) in seconds. For date and times without a timezone, the default timezone GMT is used.","type":"value","value":"time_single_configuration_calculation_date_end"},{"class":"metadata","dtype":"f","mode":"","name":"time_single_configuration_calculation_date_start","title":"Stores the start date of the *single configuration calculation* (see section_single_configuration_calculation) as time since the *Unix epoch* (00:00:00 UTC on 1 January 1970) in seconds. For date and times without a timezone, the default timezone GMT is used.","type":"value","value":"time_single_configuration_calculation_date_start"},{"class":"metadata","dtype":"f","mode":"","name":"time_single_configuration_calculation_wall_end","title":"Stores the internal wall-clock time at the end of the *single configuration calculation* (see section_single_configuration_calculation).","type":"value","value":"time_single_configuration_calculation_wall_end"},{"class":"metadata","dtype":"f","mode":"","name":"time_single_configuration_calculation_wall_start","title":"Stores the internal wall-clock time from the start of the *single configuration calculation* (see section_single_configuration_calculation).","type":"value","value":"time_single_configuration_calculation_wall_start"},{"class":"metadata","dtype":"C","mode":"","name":"topology_force_field_name","title":"(deprecated) A unique string idenfiying the force field defined in this section. Strategies to define it are discussed in the [topology\\_force\\_field\\_name](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/topology-force-field-name).","type":"string","value":"topology_force_field_name"},{"class":"metadata","dtype":"r","mode":"","name":"topology_ref","title":"Reference to the topology used for this system; if not given, the trivial topology should be assumed.","type":"value","value":"topology_ref"},{"class":"metadata","dtype":"i","mode":"","name":"total_charge","title":"Provides the total amount of charge of the system in a run.","type":"value","value":"total_charge"},{"class":"metadata","dtype":"f","mode":"","name":"transformation_matrix","title":"Matrix $\\mathbf{P}$ that is used to transform the standardized coordinates to the original coordinates. Together with the vector $\\mathbf{p}$, found in space_group_3D_origin_shift, the transformation between the standardized coordinates $\\mathbf{x}_s$ and original coordinates $\\mathbf{x}$ is then given by $\\mathbf{x}_s = \\mathbf{P} \\mathbf{x} + \\mathbf{p}$.","type":"value","value":"transformation_matrix"},{"class":"metadata","dtype":"f","mode":"","name":"transition_dipole_moments","title":"Transition dipole moments.","type":"value","value":"transition_dipole_moments"},{"class":"metadata","dtype":"f","mode":"","name":"user_quantity","title":"The values of the user-defined quantity defined in section_user_quantity_definition, evaluated along this sequence of frames.","type":"value","value":"user_quantity"},{"class":"metadata","dtype":"r","mode":"","name":"user_quantity_definition_ref","title":"Reference to the definition of the user-defined quantity .","type":"value","value":"user_quantity_definition_ref"},{"class":"metadata","dtype":"i","mode":"","name":"user_quantity_frames","title":"Array containing the strictly increasing indices referring to the frames of frame_sequence_user_quantity. If not given it defaults to the trivial mapping 0,1,...","type":"value","value":"user_quantity_frames"},{"class":"metadata","dtype":"C","mode":"","name":"user_quantity_name","title":"Descriptive name of a user-defined quantity, sampled along this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation). Dedicated metadata are created for the conserved energy-like quantity (frame_sequence_conserved_quantity), the kinetic and potential energies (kinetic_energy and potential_energy), the instantaneous temperature (instant_temperature) and pressure (instant_pressure). This metadata should be used for other quantities that are monitored along a sequence of frames.","type":"string","value":"user_quantity_name"},{"class":"metadata","dtype":"f","mode":"","name":"user_quantity_stats","title":"Average of frame_sequence_user_quantity and its standard deviation in this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation).","type":"value","value":"user_quantity_stats"},{"class":"metadata","dtype":"C","mode":"","name":"user_quantity_unit","title":"The usnit of a user-defined quantity, sampled along this sequence of frames (i.e., a trajectory, a frame is one section_single_configuration_calculation).","type":"string","value":"user_quantity_unit"},{"class":"metadata","dtype":"C","mode":"","name":"van_der_waals_method","title":"Describes the Van der Waals method. If skipped or an empty string is used, it means no Van der Waals correction is applied.\n","type":"string","value":"van_der_waals_method"},{"class":"metadata","dtype":"f","mode":"","name":"vibrational_free_energy_at_constant_volume","title":"Holds the vibrational free energy per atom at constant volume.","type":"value","value":"vibrational_free_energy_at_constant_volume"},{"class":"metadata","dtype":"f","mode":"","name":"volumetric_data_displacements","title":"Displacement vectors between grid points along each axis; same indexing rules as lattice_vectors.  In many cases, displacements and number of points are related to lattice_vectors through: [displacement] * [number of points + N] = [lattice_vector],where N is 1 for periodic directions and 0 for non-periodic ones","type":"value","value":"volumetric_data_displacements"},{"class":"metadata","dtype":"C","mode":"","name":"volumetric_data_kind","title":"The kind of function, e.g. density, potential_hartree, potential_effective.  The unit of measurement for \"volumetric_data_values\" depends on the kind: Densities are 1/m^3 and potentials are J/m^3.  See [full specification on the wiki](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/volumetric-data).","type":"string","value":"volumetric_data_kind"},{"class":"metadata","dtype":"f","mode":"","name":"volumetric_data_origin","title":"Location of the first grid point; same coordinate system as atom_positions when applicable.","type":"value","value":"volumetric_data_origin"},{"class":"metadata","dtype":"f","mode":"","name":"volumetric_data_values","title":"Array of shape (multiplicity, nx, ny, nz) containing the values.  The units of these values depend on which kind of data the values represent; see \"volumetric_data_kind\".","type":"value","value":"volumetric_data_values"},{"class":"metadata","dtype":"C","mode":"","name":"wyckoff_letters_original","title":"Wyckoff letters for atoms in the original cell.","type":"string","value":"wyckoff_letters_original"},{"class":"metadata","dtype":"C","mode":"","name":"wyckoff_letters_primitive","title":"Wyckoff letters for atoms in the primitive cell.","type":"string","value":"wyckoff_letters_primitive"},{"class":"metadata","dtype":"C","mode":"","name":"wyckoff_letters_std","title":"Wyckoff letters for atoms in the standardized cell.","type":"string","value":"wyckoff_letters_std"},{"class":"metadata","dtype":"C","mode":"","name":"xc_functional","title":"This value describes a DFT exchange-correlation (XC) functional used for evaluating the energy value stored in energy_xc_functional and related quantities (e.g., forces).\n\nIt is a unique short name obtained by combining the data stored in section_xc_functionals, more specifically by combining different xc_functional_name as described in the [xc_functional wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/XC-functional).","type":"string","value":"xc_functional"},{"class":"metadata","dtype":"C","mode":"","name":"xc_functional_name","title":"Provides the name of one of the exchange and/or correlation (XC) functionals combined in xc_functional.\n\nThe valid unique names that can be used are listed in the [xc_functional wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/XC-functional).\n\n*NOTE*: This value should refer to a correlation, an exchange or an exchange-correlation functional only.","type":"string","value":"xc_functional_name"},{"class":"metadata","dtype":"D","mode":"","name":"xc_functional_parameters","title":"Contains an associative list of non-default values of the parameters for the functional declared in xc_functional_name of the section_xc_functionals section.\n\nFor example, if a calculations using a hybrid XC functional (e.g., HSE06) specifies a user-given value of the mixing parameter between exact and GGA exchange, then this non-default value is stored in this metadata.\n\nThe labels and units of these values are defined in the paragraph dedicated to the specified functional declared in xc_functional_name of the [xc_functional wiki page](https://gitlab.mpcdf.mpg.de/nomad-lab/nomad-meta-info/wikis/metainfo/XC-functional).\n\nIf this metadata is not given, the default parameter values for the xc_functional_name are assumed.","type":"value","value":"xc_functional_parameters"},{"class":"metadata","dtype":"f","mode":"","name":"xc_functional_weight","title":"Provides the value of the weight for the exchange, correlation, or exchange-correlation functional declared in xc_functional_name (see section_xc_functionals).\n\nThis weight is used in the linear combination of the different XC functional names (xc_functional_name) in different section_xc_functionals sections to form the xc_functional used for evaluating energy_xc_functional and related quantities.\n\nIf not specified then the default is set to 1.","type":"value","value":"xc_functional_weight"},{"class":"metadata","dtype":"C","mode":"","name":"xc_method","title":"Describes the exchange correlation (XC) method used for evaluating the XC energy (energy_xc). Differently from xc_functional, perturbative treatments are also accounted for, where the string contains the reference to both the perturbative (e.g., MP2) and the starting point (e.g, Hartree-Fock) XC method defined in the section section_method.\n\nThe value consists of xc_method_current concatenated with the `@` character and the XC method (xc_method) defined in section_method that is referred to by method_to_method_ref where method_to_method_kind = \"starting_point_method\".","type":"string","value":"xc_method"},{"class":"metadata","dtype":"C","mode":"","name":"xc_method_current","title":"Identifies the exchange correlation (XC) method used for energy_xc and related quantities in a standardized short form as a string.\n\nIt is built by joining the values in the following order using the underscore `_` character: electronic_structure_method, xc_functional, self_interaction_correction_method, van_der_waals_method and relativity_method.\n\nIf any of the methods listed in the string contain non-standard settings, then the first 10 characters of the Base64 URL encoding of SHA 512 checksum of a normalized JSON with all non-redundant non-derived settings_xc are appended to the the string preceded by an underscore.\n\nWith empty strings, the underscore `_` character is skipped.\n\nIf the method defined in the section_method section is perturbative, the xc_method_current contains only the perturbative method, not the starting point (e.g. the DFT XC functional used as a starting point for a RPA perturbative calculation). In this case, the string that contains both the perturbative and starting point method is stored in xc_method.","type":"string","value":"xc_method_current"},{"class":"metadata","dtype":"C","mode":"","name":"zero_point_method","title":"Describes the zero-point vibrations method. If skipped or an empty string is used, it means no zero-point vibrations correction is applied.","type":"string","value":"zero_point_method"}],"metadata+values":[{"class":"metadata+values","dtype":"l","mode":"","name":"atom_species","title":"List of atomic symbols or numbers present in the calculated system","type":"number","value":"atom_species"},{"class":"metadata+values","dtype":"l","mode":["ignore"],"name":"calculation_upload_date","title":"Upload date of the calculation, given as total number of milliseconds is the elapsed since the unix epoch (1 January 1970)","type":"number","value":"calculation_upload_date"},{"class":"metadata+values","dtype":"l","mode":"","name":"calculation_uploader_name","title":"Name of the uploader of this calculation, given as <first_name last_name>","type":"special","value":"calculation_uploader_name"},{"class":"metadata+values","dtype":"l","mode":"","name":"crystal_system","title":"Name of the crystal system. Can be one of the following: triclinic, monoclinic, orthorhombic, tetragonal, trigonal, hexagonal or cubic.","type":"special","value":"crystal_system"},{"class":"metadata+values","dtype":"l","mode":"","name":"electronic_structure_method","title":"String identifying (one of) the electronic structre method used in the calculation.","type":"special","value":"electronic_structure_method"},{"class":"metadata+values","dtype":"l","mode":"","name":"number_of_single_configurations","title":"Number of single_configuration_calculations performed in the calculation","type":"number","value":"number_of_single_configurations"},{"class":"metadata+values","dtype":"l","mode":"","name":"program_basis_set_type","title":"The type of basis set used by the program to represent wave functions.\n\nValid values are:\n\n  * Numeric AOs\n  * Gaussians\n  * (L)APW+lo\n  * FLAPW (full-potential linearized augmented planewave)\n  * Plane waves\n  * Real-space grid\n  * Local-orbital minimum-basis","type":"special","value":"program_basis_set_type"},{"class":"metadata+values","dtype":"l","mode":"","name":"program_name","title":"Specifies the name of the program that generated the data.","type":"special","value":"program_name"},{"class":"metadata+values","dtype":"l","mode":"","name":"prototype_aflow_id","title":"AFLOW id of the prototype (see http://aflowlib.org/CrystalDatabase/prototype_index.html) identified on the basis of the space_group and normalized_wyckoff.","type":"special","value":"prototype_aflow_id"},{"class":"metadata+values","dtype":"l","mode":"","name":"prototype_aflow_url","title":"Url to the AFLOW definition of the prototype (see http://aflowlib.org/CrystalDatabase/prototype_index.html) identified on the basis of the space_group and normalized_wyckoff.","type":"special","value":"prototype_aflow_url"},{"class":"metadata+values","dtype":"l","mode":"","name":"space_group_number","title":"Specifies the International Union of Crystallography (IUC) number of the 3D space group of this system.","type":"number","value":"space_group_number"},{"class":"metadata+values","dtype":"l","mode":"","name":"springer_classification","title":"Contains the classification name of the current material according to Springer Materials","type":"special","value":"springer_classification"},{"class":"metadata+values","dtype":"l","mode":["expert"],"name":"springer_id","title":"Id of the classified material according to Springer Materials","type":"special","value":"springer_id"},{"class":"metadata+values","dtype":"l","mode":"","name":"system_composition","title":"Chemical composition, given as element name followed by its stoichiometric number, in any order. E.g., H2O or OH2 gives the same result. Note that the formula reflects the exact content of the simulation cell, so, two water molecules would have H2O4 as system_composition. For scale invariant formulas see system_reweighted_composition.","type":"special","value":"system_composition"},{"class":"metadata+values","dtype":"l","mode":"","name":"system_reweighted_composition","title":"Chemical composition, given as element name followed by its stoichiometric number, in any order. This formula is scale invariant, with respect to the number of atoms in the simulation cell. E.g., H2O yields systems where only one water molecule is present, as well as 64.","type":"special","value":"system_reweighted_composition"},{"class":"metadata+values","dtype":"l","mode":"","name":"system_type","title":"Type of the system. Allowed values are: 2D, Atom, Bulk, Molecule/Cluster, Polymer, Surface.","type":"special","value":"system_type"}],"operators":[{"class":"operators","filters":{"metadata+values":["special","number"]},"name":"=","title":"equal","value":"="},{"class":"operators","filters":{"metadata+values":"number"},"name":"<","title":"less than","value":"<"},{"class":"operators","filters":{"metadata+values":"number"},"name":"<=","title":"less than or equal","value":"<="},{"class":"operators","filters":{"metadata+values":"number"},"name":">","title":"less than","value":">"},{"class":"operators","filters":{"metadata+values":"number"},"name":">=","title":"greater than or equal","value":">="}]},"groups":[{"$order":2,"label":"Negation","value":"^negation"},{"$order":3,"label":"Quantifier","value":"^quantifiers"},{"$order":1,"label":"Query metadata by value","value":"metadata+values"},{"$order":4,"label":"Query if metadata is present","value":"metadata"},{"$order":5,"label":"Operators","value":"operators"}],"info":["calculation_uploader_name","calculation_upload_date","program_name","atom_species","system_composition","system_reweighted_composition","system_type","crystal_system","space_group_number","springer_id","electronic_structure_method","XC_functional_name","program_basis_set_type","prototype_aflow_id","prototype_aflow_url","number_of_single_configurations"],"rules":{"*value":["*value","#final"],"^negation":["^quantifiers","metadata,metadata+values"],"^quantifiers":["metadata,metadata+values"],"metadata":["#final"],"metadata+values":["operators","#final"],"operators":["*value"],"root":["^negation","^quantifiers","metadata,metadata+values"]}}