# Symmetry-reduced topological interface for unleashing a multidirectional spin-orbit torque

https://mdr.nims.go.jp/datasets/c23b733e-61fe-46c6-b350-ec2ba7a365f2

## File

- [Article.pdf](https://mdr.nims.go.jp/filesets/54fcd203-b202-4dce-98ea-f5a4f155c3a1/download) ([Detail](https://mdr.nims.go.jp/filesets/54fcd203-b202-4dce-98ea-f5a4f155c3a1.md))
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## Id

c23b733e-61fe-46c6-b350-ec2ba7a365f2

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-03-17T05:11:44.236196Z

## Updated at

2025-03-26T08:25:49.388075Z

## Published at

2025-03-26T08:25:50.802572Z

## Doi



## First published url

https://doi.org/10.1038/s42005-025-02024-1

## Date published

2025-03-13

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Symmetry-reduced topological interface for unleashing a multidirectional
    spin-orbit torque
  title_type: original
  lang: en

## Description

- description: The current-induced spin-orbit torque (SOT) at heavy metal/ferromagnet
    (HM/FM) interfaces plays a critical role in modern spintronics. In this study,
    the SOT efficiency is enhanced by engineering symmetrical structures, specifically
    by a wedge-shaped topological material interface in R3 ̅m Bi2Te3 (001)/FM heterostructures.
    The symmetry of the topological interface is manipulated to lead to unconventional
    emergences of both out-of-plane and in-plane spin polarizations. Torque measurements
    show that these polarizations have conversion efficiencies up to 10%. This considerable
    improvement in the SOT efficiency is characterized both qualitatively and quantitatively
    based on the nonreciprocal ferromagnetic resonance (FMR) spectra and the SOT dependence
    on the magnetic field direction. The observed enhancement in the unconventional
    SOT is attributed to the wedge-oriented symmetry reduction of the spin-momentum
    locking structure of interfacial Dirac fermions. This advance opens new avenues
    for designing geometrically novel spintronics devices, demonstrating the potential
    of using multidirectional SOTs for forthcoming nanotechnological applications.
  description_type: abstract
  lang: und

## Creator

- name: Satoshi Sugimoto
  role: author
  orcid: https://orcid.org/0000-0002-7148-2372
- name: Yasufumi Araki
  role: author
  orcid: https://orcid.org/0000-0001-5873-7695
- name: Yukiko K. Takahashi
  role: author
  orcid: https://orcid.org/0000-0001-9197-7236
- name: Jun’ichi Ieda
  role: author
  orcid: https://orcid.org/0000-0001-6069-8533
- name: Shinya Kasai
  role: author
  orcid: https://orcid.org/0000-0001-7149-4800

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Spin-orbit torque
  schema: not_defined
- subject: Topological Insulator
  schema: not_defined
- subject: Nonreciprocal transport
  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'
  issue: '1'
  article_number: '100'

## Conference



## Related item



## Funding

- identifier: 24K00952
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 20K14419
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 22K03538
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: JPMJPR18L3
  funder_name: MEXT | JST | Precursory Research for Embryonic Science and Technology

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## Chemical composition



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## Fileset

- id: 54fcd203-b202-4dce-98ea-f5a4f155c3a1
  filename: Article.pdf
  content_type: application/pdf
  size: 2577130
  md5: cec3eb3d1b47377d31edb0c25a932984
- id: c55eb5d9-792d-4b6d-bfe4-6a0483881758
  filename: Supplymentary.pdf
  content_type: application/pdf
  size: 1508093
  md5: 74ffd664956e4297643c836dfffc6a11

## Thumbnail

fileset_id: c55eb5d9-792d-4b6d-bfe4-6a0483881758
filename: Supplymentary.pdf