# Evidence for single variant in altermagnetic RuO2(101) thin films

https://mdr.nims.go.jp/datasets/29950723-7626-4150-ad7a-11892fc8a6a8

## File

- [He et al. - 2025 - Evidence for single variant in altermagnetic RuO2(101) thin films.pdf](https://mdr.nims.go.jp/filesets/58a25ecc-6425-4f6a-9a6f-93dc99b4e525/download) ([Detail](https://mdr.nims.go.jp/filesets/58a25ecc-6425-4f6a-9a6f-93dc99b4e525.md))

## Id

29950723-7626-4150-ad7a-11892fc8a6a8

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-09-25T08:17:42.043469Z

## Updated at

2025-09-26T03:30:17.450194Z

## Published at

2025-09-26T03:19:02.207326Z

## Doi



## First published url

https://doi.org/10.1038/s41467-025-63344-y

## Date published

2025-09-24

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Evidence for single variant in altermagnetic RuO2(101) thin films
  title_type: original
  lang: en

## Description

- description: Altermagnetism presents intriguing possibilities for spintronic devices
    due to its unique combination of strong spin-splitting and zero net magnetization.
    However, realizing its full potential hinges on fabricating single-variant altermagnetic
    thin films. In this work, we present definitive evidence for the formation of
    single-variant altermagnetic RuO2(101) thin films with fully epitaxial growth
    on Al2O3(1"1"  ̅02) r-plane substrates, confirmed through rigorous structural
    analyses using X-ray diffraction, atomic-resolution transmission electron microscopy
    and X-ray magnetic linear dichroism (XMLD). The mutual correspondence of the occupancy
    of oxygen atoms on the surfaces of RuO2(101)[010] and Al2O3(1"1"  ̅02)[11"2"  ̅0]
    plays a decisive role in the formation of the single-variant RuO2, which is also
    supported by our first-principles density functional theory calculations. We further
    observed spin-splitting magnetoresistance in the single-variant RuO2(101)/CoFeB
    bilayers, highlighting the characteristic effect of single variant on spin transport.
    The demonstration of single-variant RuO2(101) films marks a significant advancement
    in the field of alternating magnetism and paves the way for exploring their potential
    applications.
  description_type: abstract
  lang: und

## Creator

- name: Cong He
  role: author
  orcid: https://orcid.org/0000-0002-7548-9344
- name: Zhenchao Wen
  role: author
  orcid: https://orcid.org/0000-0001-7496-1339
- name: Jun Okabayashi
  role: author
  orcid: https://orcid.org/0000-0002-9025-2783
- name: Yoshio Miura
  role: author
  orcid: https://orcid.org/0000-0002-5605-5452
- name: Tianyi Ma
  role: author
  orcid: https://orcid.org/0000-0002-5987-6459
- name: Tadakatsu Ohkubo
  role: author
  orcid: https://orcid.org/0000-0003-3548-1951
- name: Takeshi Seki
  role: author
  orcid: https://orcid.org/0000-0003-3195-7051
- name: Hiroaki Sukegawa
  role: author
  orcid: https://orcid.org/0000-0002-4034-7848
- name: Seiji Mitani
  role: author
  orcid: https://orcid.org/0000-0002-1348-0774

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Altermagnet
  schema: not_defined
- subject: RuO2
  schema: not_defined
- subject: XMLD
  schema: not_defined
- subject: Spin splitting magnetoresistance
  schema: not_defined
- subject: Single variant
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '16'
  issue: '1'
  article_number: '8235'

## Conference



## Related item



## Funding

- identifier: 20H00299
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 21H01750
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 24H00408
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 22H04966
  funder_name: MEXT | Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Fileset

- id: 58a25ecc-6425-4f6a-9a6f-93dc99b4e525
  filename: He et al. - 2025 - Evidence for single variant in altermagnetic RuO2(101)
    thin films.pdf
  content_type: application/pdf
  size: 2460744
  md5: 931d0c870ffe8f9233a394578d1eca1a

## Thumbnail

fileset_id: 58a25ecc-6425-4f6a-9a6f-93dc99b4e525
filename: He et al. - 2025 - Evidence for single variant in altermagnetic RuO2(101)
  thin films.pdf