# First-principles lattice thermal conductivity calculation for Na2AgAs / Cmcm (63) / materials id 8411

https://mdr.nims.go.jp/datasets/b013ca17-4369-485d-8f3a-e9f391fcf8f0

## File

- [FORCES_FC3.xz](https://mdr.nims.go.jp/filesets/a96aec8c-1fa1-4678-b4bc-ec92486c2158/download) ([Detail](https://mdr.nims.go.jp/filesets/a96aec8c-1fa1-4678-b4bc-ec92486c2158.md))
- [LTC-calc.log](https://mdr.nims.go.jp/filesets/11e3a7cf-d780-4ed7-a6dc-16ef98fc2f1d/download) ([Detail](https://mdr.nims.go.jp/filesets/11e3a7cf-d780-4ed7-a6dc-16ef98fc2f1d.md))
- [phono3py_mlp_eval_fc3_disp.yaml.xz](https://mdr.nims.go.jp/filesets/6bb6d69f-da7b-40b3-911c-5c7242694ba4/download) ([Detail](https://mdr.nims.go.jp/filesets/6bb6d69f-da7b-40b3-911c-5c7242694ba4.md))
- [phonopy_mlp_eval_fc2_dataset.yaml.xz](https://mdr.nims.go.jp/filesets/c904d148-7bd6-4917-9bb7-caee3cda8d6a/download) ([Detail](https://mdr.nims.go.jp/filesets/c904d148-7bd6-4917-9bb7-caee3cda8d6a.md))
- [phonopy_training_dataset.yaml.xz](https://mdr.nims.go.jp/filesets/2bc7fd83-ac3f-46cc-9694-626f16eb95fc/download) ([Detail](https://mdr.nims.go.jp/filesets/2bc7fd83-ac3f-46cc-9694-626f16eb95fc.md))
- [polymlp.yaml.xz](https://mdr.nims.go.jp/filesets/3b0bc0da-ef34-4cf6-b9b1-6c5318ccab8a/download) ([Detail](https://mdr.nims.go.jp/filesets/3b0bc0da-ef34-4cf6-b9b1-6c5318ccab8a.md))
- [vasp-settings.tar.xz](https://mdr.nims.go.jp/filesets/35fcdb44-06e2-4097-bbab-6123ee0e1ff4/download) ([Detail](https://mdr.nims.go.jp/filesets/35fcdb44-06e2-4097-bbab-6123ee0e1ff4.md))
- [band_pdos.png](https://mdr.nims.go.jp/filesets/b009dfe1-7cfb-4041-b345-470068843da0/download) ([Detail](https://mdr.nims.go.jp/filesets/b009dfe1-7cfb-4041-b345-470068843da0.md))

## Id

b013ca17-4369-485d-8f3a-e9f391fcf8f0

## Local identifier

identifier: MDR-LTC-2026Jan9/mp-8411

## Visibility

open_to_public

## State

published

## Created at

2026-01-15T05:55:10.366801Z

## Updated at

2026-01-24T03:51:40.692880Z

## Published at

2026-01-24T01:51:19.893159Z

## Doi



## First published url



## Date published



## Recorded date published



## Resource type

dataset

## Manuscript type

na

## Collection

- id: 0113dccc-ec45-42ed-86db-f455f9b63fb1
  identifier: https://mdr.nims.go.jp/pid/0113dccc-ec45-42ed-86db-f455f9b63fb1
  title: MDR lattice thermal conductivity calculation database

## Title

- title: First-principles lattice thermal conductivity calculation for Na2AgAs / Cmcm
    (63) / materials id 8411
  title_type: original
  lang: en

## Description

- description: |
    Input data used to calculate the lattice thermal conductivities of
    Na2AgAs.
  description_type: abstract
  lang: en
- description: |
    Initial geometry optimization of the conventional unit cell, standardized by
    the spglib code, was performed using the VASP code with the PBEsol
    exchange-correlation functional. Supercell forces and energies were
    calculated using the VASP code, and these data were used to develop
    polynomial machine learning potentials (MLPs) with the pypolymlp code. The
    generated MLPs are stored in polymlp.yaml.xz. Parameters required for the
    non-analytical term correction (Born effective charges and dielectric
    constants) were calculated using the VASP code with the primitive cell.
    These VASP results are provided in phonopy_training_dataset.yaml.xz, and the
    VASP input configurations can be found in vasp-settings.tar.xz. The
    primitive cell, unit cell, and supercell structures used for the VASP
    calculations are also provided in phonopy_training_dataset.yaml.xz. The
    internal atomic positions of the supercell were then optimized using the
    pypolymlp code under symmetry constraints; the relaxed structure can be
    found in phonopy_mlp_eval_fc2_dataset.yaml.xz (or
    phono3py_mlp_eval_fc3_disp.yaml.xz). Second-order force constants (fc2) can
    be calculated using the phonopy and symfc codes with the displacement–force
    dataset evaluated by the pypolymlp code, which is stored in
    phonopy_mlp_eval_fc2_dataset.yaml.xz. Third-order force constants (fc3) can
    be calculated using the built-in finite difference approach in the phono3py
    code with the displacement–force dataset stored in
    phono3py_mlp_eval_fc3_disp.yaml.xz (displacements) and FORCES_FC3.xz
    (forces). As an example, lattice thermal conductivities (LTCs) were
    calculated using the phono3py code with fc2 and fc3, and the calculation log
    is provided in LTC-calc.log. The harmonic phonon band structure and density
    of states are plotted in band_pdos.png. The band path was generated using
    the SeeK-path code.
  description_type: abstract
  lang: en
- description: |
    Input data used to calculate the lattice thermal conductivities of
    Na2AgAs.
  description_type: abstract
  lang: en
- description: |
    Initial geometry optimization of the conventional unit cell, standardized by
    the spglib code, was performed using the VASP code with the PBEsol
    exchange-correlation functional. Supercell forces and energies were
    calculated using the VASP code, and these data were used to develop
    polynomial machine learning potentials (MLPs) with the pypolymlp code. The
    generated MLPs are stored in polymlp.yaml.xz. Parameters required for the
    non-analytical term correction (Born effective charges and dielectric
    constants) were calculated using the VASP code with the primitive cell.
    These VASP results are provided in phonopy_training_dataset.yaml.xz, and the
    VASP input configurations can be found in vasp-settings.tar.xz. The
    primitive cell, unit cell, and supercell structures used for the VASP
    calculations are also provided in phonopy_training_dataset.yaml.xz. The
    internal atomic positions of the supercell were then optimized using the
    pypolymlp code under symmetry constraints; the relaxed structure can be
    found in phonopy_mlp_eval_fc2_dataset.yaml.xz (or
    phono3py_mlp_eval_fc3_disp.yaml.xz). Second-order force constants (fc2) can
    be calculated using the phonopy and symfc codes with the displacement–force
    dataset evaluated by the pypolymlp code, which is stored in
    phonopy_mlp_eval_fc2_dataset.yaml.xz. Third-order force constants (fc3) can
    be calculated using the built-in finite difference approach in the phono3py
    code with the displacement–force dataset stored in
    phono3py_mlp_eval_fc3_disp.yaml.xz (displacements) and FORCES_FC3.xz
    (forces). As an example, lattice thermal conductivities (LTCs) were
    calculated using the phono3py code with fc2 and fc3, and the calculation log
    is provided in LTC-calc.log. The harmonic phonon band structure and density
    of states are plotted in band_pdos.png. The band path was generated using
    the SeeK-path code.
  description_type: abstract
  lang: en

## Creator

- name: Atsushi Togo
  role: author
  orcid: https://orcid.org/0000-0001-8393-9766
  organization: National Institute for Materials Science
  department: Center for Basic Research on Materials
  ror: https://ror.org/026v1ze26

## Contact agent

- name: Atsushi Togo
  email: togo.atsushi@nims.go.jp
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Publisher

organization: NIMS
ror: https://ror.org/026v1ze26

## Managing organization

organization: National Institute for Materials Science
department: CBRM
ror: https://ror.org/026v1ze26

## Keyword

- subject: Lattice thermal conductivity
  schema: not_defined
- subject: Na2AgAs
  schema: not_defined

## Rights

- description: Creative Commons Attribution 4.0 International
  identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: simulation

## Embargo



## Journal



## Conference



## Related item



## Funding



## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen

- name: Na2AgAs
  description: Na2AgAs

## Chemical composition

- identifier: Na2AgAs
  description: Na2AgAs

## Structure for specimen

- description: Na2AgAs
  category_description: Na2AgAs

## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software

- name: phono3py
  identifier: https://github.com/phonopy/phono3py
- name: phonopy
  identifier: https://github.com/phonopy/phonopy
- name: spglib
  identifier: https://github.com/spglib/spglib
- name: symfc
  identifier: https://github.com/symfc/symfc
- name: pypolymlp
  identifier: https://github.com/sekocha/pypolymlp
- name: VASP
  identifier: https://www.vasp.at/
- name: Seek-path
  identifier: https://github.com/giovannipizzi/seekpath

## Custom property



## Fileset

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  filename: FORCES_FC3.xz
  content_type: application/x-xz
  size: 5912464
  md5: bf470d6ddc2fca083be17ded85131cb0
- id: 11e3a7cf-d780-4ed7-a6dc-16ef98fc2f1d
  filename: LTC-calc.log
  content_type: text/x-log
  size: 251200
  md5: af00c93a94ea2373ede32ae28e5710db
- id: 6bb6d69f-da7b-40b3-911c-5c7242694ba4
  filename: phono3py_mlp_eval_fc3_disp.yaml.xz
  content_type: application/x-xz
  size: 17096
  md5: 4e4b9ebf85b263ae2240bedfa12e270c
- id: c904d148-7bd6-4917-9bb7-caee3cda8d6a
  filename: phonopy_mlp_eval_fc2_dataset.yaml.xz
  content_type: application/x-xz
  size: 694064
  md5: 3276a51bafc1fb01f80f55eb07f33f38
- id: 2bc7fd83-ac3f-46cc-9694-626f16eb95fc
  filename: phonopy_training_dataset.yaml.xz
  content_type: application/x-xz
  size: 885748
  md5: 5ed2d1b8a8cdffbdda61a0f34764d8ba
- id: 3b0bc0da-ef34-4cf6-b9b1-6c5318ccab8a
  filename: polymlp.yaml.xz
  content_type: application/x-xz
  size: 297392
  md5: 95f7b8ee18d0ee0a0c2ca16a73a4e889
- id: 35fcdb44-06e2-4097-bbab-6123ee0e1ff4
  filename: vasp-settings.tar.xz
  content_type: application/x-xz
  size: 596
  md5: eef69b3febd1ccbd001e5b307e386eff
- id: b009dfe1-7cfb-4041-b345-470068843da0
  filename: band_pdos.png
  content_type: image/png
  size: 91371
  md5: 2aed333671174b5fede6e7aedc3b1a03

## Thumbnail

fileset_id: b009dfe1-7cfb-4041-b345-470068843da0
filename: band_pdos.png