# Observation of orbital-angular-momentum-driven temperature modulation via the spin Peltier effect

https://mdr.nims.go.jp/datasets/ca56fb01-b755-4f74-a940-15c430ee6bdd

## File

- [sciadv.aej1838.pdf](https://mdr.nims.go.jp/filesets/359268da-470f-4199-b775-b7bb19bc7544/download) ([Detail](https://mdr.nims.go.jp/filesets/359268da-470f-4199-b775-b7bb19bc7544.md))

## Id

ca56fb01-b755-4f74-a940-15c430ee6bdd

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-10-29T19:14:44.813482Z

## Updated at

2026-10-29T19:17:09.637667Z

## Published at

2026-11-02T01:32:55.834560Z

## Doi



## First published url

https://doi.org/10.1126/sciadv.aej1838

## Date published

2026-10-02

## Recorded date published

2026-10-2

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Observation of orbital-angular-momentum-driven temperature modulation via
    the spin Peltier effect
  title_type: original
  lang: en

## Description

- description: Angular-momentum transport provides a pathway for controlling energy
    flow in solids beyond conventional charge-based mechanisms. Although spin currents
    are known to mediate spin-caloritronic phenomena such as the spin Peltier effect
    (SPE), the role of orbital angular momentum (OAM) in heat transport remains largely
    unexplored. Here, we demonstrate OAM-driven temperature modulation via the SPE
    in yttrium-iron-garnet/Pt/CuOx heterostructures. Using wedge-shaped CuOx layers
    combined with spatially resolved active thermal measurement techniques, we map
    the continuous thickness dependence and quantitatively disentangle the spin- and
    orbital-current-mediated contributions within a single device. The orbital-mediated
    component exhibits a pronounced maximum at an intermediate thickness, revealing
    a characteristic length scale for interfacial OAM generation and propagation at
    the Cu/CuOx interface. These results provide direct experimental evidence that
    charge-current-driven OAM can drive SPE-induced temperature modulation, establishing
    interfacial orbital processes as an additional channel for heat transport and
    providing a pathway toward spin-orbit caloritronics.
  description_type: abstract
  lang: und

## Creator

- name: Sang J. Park
  role: author
  orcid: https://orcid.org/0000-0003-1684-4876
- name: Tsuneyoshi Kan
  role: author
- name: Takamasa Hirai
  role: author
  orcid: https://orcid.org/0000-0002-5577-8018
- name: Ken-ichi Uchida
  role: author
  orcid: https://orcid.org/0000-0001-7680-3051

## Contact agent



## Publisher

organization: American Association for the Advancement of Science (AAAS)

## Managing organization



## Keyword

- subject: spin caloritronics
  schema: not_defined
- subject: spin Peltier effect
  schema: not_defined
- subject: orbital angular momentum
  schema: not_defined
- subject: lock-in thermography
  schema: not_defined

## Rights

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

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## Data origin



## Embargo



## Journal

- title: Science Advances
  issn: '23752548'
  volume: '12'
  issue: '40'
  article_number: eaej1838

## Conference



## Related item



## Funding

- identifier: 22H04965
  funder_name: JSPS
- identifier: JPMJER2201
  funder_name: JST

## Instrument



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## Measurement method



## Specimen



## Chemical composition



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## Fileset

- id: 359268da-470f-4199-b775-b7bb19bc7544
  filename: sciadv.aej1838.pdf
  content_type: application/pdf
  size: 1242525
  md5: a5fb9314890c563f11f3de7b4d3d657a

## Thumbnail

fileset_id: 359268da-470f-4199-b775-b7bb19bc7544
filename: sciadv.aej1838.pdf