# Surface-specific thermal spin-depolarization on the half-metallic Heusler films

https://mdr.nims.go.jp/datasets/54f3e909-fb87-4d94-8326-93cabbec76ec

## File

- [s42005-024-01918-w.pdf](https://mdr.nims.go.jp/filesets/39ef6cbb-a370-4660-a078-7a0cc1705b75/download) ([Detail](https://mdr.nims.go.jp/filesets/39ef6cbb-a370-4660-a078-7a0cc1705b75.md))

## Id

54f3e909-fb87-4d94-8326-93cabbec76ec

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-01-06T04:29:35.405233Z

## Updated at

2025-01-07T07:30:54.053409Z

## Published at

2025-01-20T03:30:18.698188Z

## Doi



## First published url

https://doi.org/10.1038/s42005-024-01918-w

## Date published

2025-01-04

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Surface-specific thermal spin-depolarization on the half-metallic Heusler
    films
  title_type: original
  lang: en

## Description

- description: "Half-metallic ferromagnets exhibit a perfect spin-polarization at
    the Fermi energy (EF). Among\r\nmany candidates, Co2MnSi Heusler alloy is the
    most vigorously investigated material from both\r\nfundamental and practical perspectives
    due to its half-metallic nature and high Curie temperature\r\n(TC) of 985 K. Magnetic
    junction devices using Co2MnSi thin-film are known to show remarkable\r\nperformance
    at low temperatures. However, the performance is significantly degraded at room\r\ntemperature,
    which requires a detailed understanding of the temperature dependence of the electronic
    structure of Co2MnSi films. Here, using high-resolution spin- and angle-resolved
    photoelectron spectroscopy combined with first-principles slab calculations, we
    experimentally determined the temperature- and momentum-dependent surface spin-polarization
    of Co2MnSi thin-film. The recorded spin-polarization around EF at 50 K (300 K)
    reaches ∼75% (∼50%) at the X point, while it is ∼60% (∼30%) at the Fermi momentum.
    The observed surface-specific spin-depolarization behavior can be described by
    the thermally excited magnon model even well below TC, and we conclude that the
    spin fluctuation is markedly enhanced on its surface. Our findings provide important
    insights into the temperature-dependent electronic structure of half-metallic
    ferromagnet Heusler thin films, which could have significant implications for
    future spintronic applications."
  description_type: abstract
  lang: und

## Creator

- name: Kazuki Sumida
  role: author
  orcid: https://orcid.org/0000-0002-5783-3703
- name: Masaaki Kakoki
  role: author
- name: Yuya Sakuraba
  role: author
  orcid: https://orcid.org/0000-0003-4618-9550
- name: Keisuke Masuda
  role: author
  orcid: https://orcid.org/0000-0002-6884-6390
- name: Kazuki Goto
  role: author
- name: Takashi Kono
  role: author
- name: Koji Miyamoto
  role: author
  orcid: https://orcid.org/0000-0001-5842-9481
- name: Yoshio Miura
  role: author
  orcid: https://orcid.org/0000-0002-5605-5452
- name: Kazuhiro Hono
  role: author
  orcid: https://orcid.org/0000-0001-7367-0193
- name: Taichi Okuda
  role: author
  orcid: https://orcid.org/0000-0002-5790-3847
- name: Akio Kimura
  role: author
  orcid: https://orcid.org/0000-0002-1501-3918

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Half metal
  schema: not_defined
- subject: Heusler alloys
  schema: not_defined
- subject: spin polarization
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Communications Physics
  issn: '23993650'
  volume: '8'
  article_number: '12'

## Conference



## Related item



## Funding

- identifier: 17H06152
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 17H06152
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 20H00347
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 17H06152
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 17H06138
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 18H03683
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 24K17614
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 21K14540
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 17H06152
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 23K03933
  funder_name: MEXT | Japan Society for the Promotion of Science

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## Fileset

- id: 39ef6cbb-a370-4660-a078-7a0cc1705b75
  filename: s42005-024-01918-w.pdf
  content_type: application/pdf
  size: 1759746
  md5: bf5111eabb7f1f0561412344f18da8b0

## Thumbnail

fileset_id: 39ef6cbb-a370-4660-a078-7a0cc1705b75
filename: s42005-024-01918-w.pdf