# Effects of Elemental Doping and Interface Engineering on Spin-Orbit Torques in CoSi-based Topological Semimetal Thin Films

https://mdr.nims.go.jp/datasets/f075adbc-26bc-4ed2-bd63-a464fdcc32b4

## File

- [(Tang)InterMag final.pdf](https://mdr.nims.go.jp/filesets/7b399d85-6533-46c0-8bdf-c3bdaa56261b/download) ([Detail](https://mdr.nims.go.jp/filesets/7b399d85-6533-46c0-8bdf-c3bdaa56261b.md))

## Id

f075adbc-26bc-4ed2-bd63-a464fdcc32b4

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-11-20T05:19:09.097172Z

## Updated at

2023-11-24T04:12:40.653000Z

## Published at

2023-11-25T04:30:17.869500Z

## Doi

https://doi.org/10.48505/nims.4261

## First published url



## Date published



## Recorded date published



## Resource type

conference_presentation

## Manuscript type

na

## Collection



## Title

- title: Effects of Elemental Doping and Interface Engineering on Spin-Orbit Torques
    in CoSi-based Topological Semimetal Thin Films
  title_type: original
  lang: en

## Description

- description: This study reports on how Ni or Fe doping and interface engineering
    affect the spin-orbit torques (SOTs) generated from the topological semimetal
    CoSi. The CoSi films deposited on c-plane sapphire substrates are crystalized
    in a B20 structure and textured in (210) orientation even after 15% Ni or 26%
    Fe doping. We characterized the SOTs from the films exerted onto the magnetization
    of a CoFeB layer by harmonic Hall and spin-torque ferromagnetic resonance measurements.
    The results show that the spin Hall efficiency ξSH of the CoSi decreases after
    Ni or Fe doping. According to the electrical conductivity dependence of the spin
    Hall conductivity, which locates at the regime of intrinsic mechanism of spin
    Hall effect, the reduction of ξSH may result from the degraded topological electronic
    structures of CoSi by doping. It is also found that inserting a Cu layer at the
    Co(Ni, Fe)Si/CoFeB interface enhances the ξSH. The enhancement can be due to the
    improved interfacial spin transparency between the Co(Ni, Fe)Si and CoFeB layers.
  description_type: abstract
  lang: eng

## Creator

- name: タン カ
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Spintronics Group
  ror: https://ror.org/026v1ze26
- name: 温 振超
  role: author
  orcid: https://orcid.org/0000-0001-7496-1339
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Spintronics Group
  ror: https://ror.org/026v1ze26
- name: 関 剛斎
  role: author
  organization: Institute for Materials Research Tohoku University
- name: 介川 裕章
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Spintronics Group
  ror: https://ror.org/026v1ze26
- name: 三谷 誠司
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials
  ror: https://ror.org/026v1ze26

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## Keyword

- subject: Spin-Orbit Torques
  schema: not_defined
- subject: CoSi-based Topological Semimetal Thin Films
  schema: not_defined
- subject: Elemental Doping
  schema: not_defined
- subject: Interface Engineering
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: Intermag 2023
identifier: https://intermag.org/

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## Fileset

- id: 7b399d85-6533-46c0-8bdf-c3bdaa56261b
  filename: "(Tang)InterMag final.pdf"
  content_type: application/pdf
  size: 356993
  md5: 9a6ec9577c804f391f5754a5de8863da

## Thumbnail

fileset_id: 7b399d85-6533-46c0-8bdf-c3bdaa56261b
filename: "(Tang)InterMag final.pdf"