# Non-Equilibrium Magnon Engineering Enabling Significant Thermal Transport Modulation

https://mdr.nims.go.jp/datasets/30a33da6-4746-4b8b-b5dc-ca37e3c0da85

## File

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## Id

30a33da6-4746-4b8b-b5dc-ca37e3c0da85

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-10-18T00:35:51.689206Z

## Updated at

2025-10-21T06:49:59.345444Z

## Published at

2025-10-21T06:43:47.194772Z

## Doi



## First published url

https://doi.org/10.1002/adfm.202506554

## Date published

2025-10-01

## Recorded date published

2025-10

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Non-Equilibrium Magnon Engineering Enabling Significant Thermal Transport
    Modulation
  title_type: original
  lang: en

## Description

- description: Thermal conductivity, a fundamental parameter characterizing thermal
    transport in solids, is typically determined by electron and phonon transport.
    Although electrical transport properties are material-specific, recent advance
    in understanding phonon transport has led to new insights on controlling the thermal
    conductivity via phonon engineering techniques. Here, an unconventional way of
    artificially modulating the heat conduction in solids is demonstrated via engineering
    of magnon transport. Time-domain thermoreflectance measurements in ferromagnetic
    metal/insulator junction systems reveal that the thermal conductivity of the ferromagnetic
    metals and interfacial thermal conductance vary substantially depending on the
    spatial distribution of non-equilibrium spin currents. Systematic measurements
    of the thermal transport properties with changing the boundary conditions for
    spin currents unveil that magnons significantly modulate the heat conduction by
    ~10 W/mK even in ferromagnetic metals at room temperature, upsetting the conventional
    wisdom that the magnon thermal conductivity is very small in metals except at
    low temperatures. This magnon-engineered thermal transport offers a new principle
    and manner for active thermal management.
  description_type: abstract
  lang: und

## Creator

- name: Takamasa Hirai
  role: author
  orcid: https://orcid.org/0000-0002-5577-8018
- name: Toshiaki Morita
  role: author
- name: Subrata Biswas
  role: author
- name: Jun Uzuhashi
  role: author
  orcid: https://orcid.org/0000-0003-2023-8158
- name: Takashi Yagi
  role: author
  orcid: https://orcid.org/0000-0002-2008-872X
- name: Yuichiro Yamashita
  role: author
  orcid: https://orcid.org/0000-0003-1376-0263
- name: Varun Kumar Kushwaha
  role: author
- name: Fuya Makino
  role: author
- name: Rajkumar Modak
  role: author
- name: Yuya Sakuraba
  role: author
  orcid: https://orcid.org/0000-0003-4618-9550
- name: Tadakatsu Ohkubo
  role: author
  orcid: https://orcid.org/0000-0003-3548-1951
- name: Rulei Guo
  role: author
- name: Bin Xu
  role: author
- name: Junichiro Shiomi
  role: author
  orcid: https://orcid.org/0000-0002-3552-4555
- name: Daichi Chiba
  role: author
  orcid: https://orcid.org/0000-0002-6631-5131
- name: Ken-ichi Uchida
  role: author
  orcid: https://orcid.org/0000-0001-7680-3051

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: Magnon engineering
  schema: not_defined
- subject: Thermal conductivity
  schema: not_defined
- subject: Interfacial thermal resistance
  schema: not_defined
- subject: Time-domain thermoreflectance
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Advanced Functional Materials
  issn: 1616301X
  volume: '35'
  issue: '40'
  article_number: '2506554'

## Conference



## Related item



## Funding

- funder_name: Thermal and Electric Energy Technology Foundation
- funder_name: NEC Corporation
- identifier: 22H04965
  funder_name: Japan Society for the Promotion of Science
- identifier: 22K20495
  funder_name: Japan Society for the Promotion of Science
- identifier: JPMJER2201
  funder_name: Exploratory Research for Advanced Technology
- identifier: JPMJCR17I1
  funder_name: Core Research for Evolutional Science and Technology

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## Fileset

- id: 57a8a1ca-dd66-498b-98c7-2a12a6359195
  filename: Adv Funct Materials - 2025 - Hirai - Non-Equilibrium Magnon Engineering
    Enabling Significant Thermal Transport Modulation.pdf
  content_type: application/pdf
  size: 1414471
  md5: 5e0f16827c68316adb9c696c2fddd2aa

## Thumbnail

fileset_id: 57a8a1ca-dd66-498b-98c7-2a12a6359195
filename: Adv Funct Materials - 2025 - Hirai - Non-Equilibrium Magnon Engineering
  Enabling Significant Thermal Transport Modulation.pdf