# Unified Description of Spin-Lattice Coupling and Thermodynamics in the Pyrochlore Heisenberg Antiferromagnet

https://mdr.nims.go.jp/datasets/02d882e9-54f4-44ca-8e4e-6b53e204e3e5

## File

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## Id

02d882e9-54f4-44ca-8e4e-6b53e204e3e5

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-04-02T02:18:08.897043Z

## Updated at

2026-04-03T00:25:40.078163Z

## Published at

2026-04-03T03:26:38.905821Z

## Doi



## First published url

https://doi.org/10.1103/8c73-l4nk

## Date published

2026-03-16

## Recorded date published

2026-3

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Unified Description of Spin-Lattice Coupling and Thermodynamics in the Pyrochlore
    Heisenberg Antiferromagnet
  title_type: original
  lang: en

## Description

- description: We study an extended model to describe the spin-lattice coupling, incorporating
    individual vibrations of bonds and atomic sites alongside distance-dependent exchange
    interactions. The proposed spin Hamiltonian can be effectively considered as an
    interpolation between two well-established minimum models, the bond-phonon model
    and the site-phonon model. The extended model, which treats bond phonons and site
    phonons on comparable footing, well reproduces successive field-induced phase
    transitions as well as the thermodynamic properties of a three-up–one-down state
    in the pyrochlore-lattice Heisenberg antiferromagnet, including negative thermal
    expansion, an enhanced magnetocaloric effect, and a sharp specific-heat peak.
    The present approach is broadly applicable to various spin models, providing a
    framework for identifying the primary phonon modes responsible for spin-lattice
    coupling and for understanding complex magnetic phase diagrams.
  description_type: abstract
  lang: und

## Creator

- name: Masaki Gen
  role: author
- name: Hidemaro Suwa
  role: author
- name: Shusaku Imajo
  role: author
- name: Chao Dong
  role: author
- name: Hiroaki Ueda
  role: author
- name: Makoto Tachibana
  role: author
  orcid: https://orcid.org/0000-0002-5907-5563
  organization: National Institute for Materials Science
- name: Akihiko Ikeda
  role: author
- name: Koichi Kindo
  role: author
- name: Yoshimitsu Kohama
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Spin-Lattice Coupling
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review Letters
  issn: '10797114'
  volume: '136'
  issue: '11'
  article_number: '116702'

## Conference



## Related item



## Funding

- identifier: 20J10988
  funder_name: Japan Society for the Promotion of Science
- identifier: 24H01609
  funder_name: Japan Society for the Promotion of Science
- identifier: 24H01633
  funder_name: Japan Society for the Promotion of Science

## Instrument



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## Measurement method



## Specimen



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## Fileset

- id: 3a7f6f76-20a2-433b-991e-9ca25d1a4f11
  filename: 2508.13535v2.pdf
  content_type: application/pdf
  size: 3144129
  md5: 8837f8d41e68e48409edcf2ab4e951e1

## Thumbnail

fileset_id: 3a7f6f76-20a2-433b-991e-9ca25d1a4f11
filename: 2508.13535v2.pdf