# Ultra-low Gilbert damping and self-induced inverse spin Hall effect in GdFeCo thin films

https://mdr.nims.go.jp/datasets/94136826-a6e0-4fb6-830b-f4e290ecd8e2

## File

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## Id

94136826-a6e0-4fb6-830b-f4e290ecd8e2

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-12-27T00:28:05.015976Z

## Updated at

2024-12-27T07:31:01.575998Z

## Published at

2024-12-27T23:30:41.867331Z

## Doi

https://doi.org/10.48505/nims.5230

## First published url

https://doi.org/10.1063/5.0231132

## Date published

2024-11-28

## Recorded date published

2024-11-28

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Ultra-low Gilbert damping and self-induced inverse spin Hall effect in GdFeCo
    thin films
  title_type: original
  lang: en

## Description

- description: Ferrimagnetic materials have garnered significant attention due to
    their broad range of tunabilities and functionalities in spintronics applications.
    Among these materials, rare earth-transition metal GdFeCo alloy films have been
    the subject of intensive investigation due to their spin-dependent transport properties
    and strong spin-orbit coupling. In this report, we present self-induced spin-to-charge
    conversion in single-layer GdFeCo films of different thicknesses via inverse spin
    Hall effect. A detailed investigation of spin dynamics was carried out using broadband
    ferromagnetic resonance measurements. The anisotropy constant and the effective
    g-factor are found to decrease with thickness, and they become nearly constant
    for thicknesses beyond 25 nm. A remarkably low damping constant of 0.0029±0.0003
    is obtained in the 43-nm-thick film, which is the lowest among all previous reports
    on GdFeCo thin films. Furthermore, we have demonstrated self-induced inverse spin
    Hall effect, which has not reported so far in a single-layer of GdFeCo thin film.
    Our analysis shows that the inverse spin Hall effect becomes increasingly dominant
    over the spin rectification effect with increasing film thickness. The in-plane
    angular-dependent voltage measurement of the 43-nm-thick film reveals a spin pumping
    voltage of 1.64 µV. The observation of spin-to-charge current conversion is attributed
    to the presence of high spin-orbit coupling element Gd in the film as well as
    co-existence of mixed phases (nanocrystalline and amorphous) in our films. Our
    findings underscore the potential of GdFeCo as a prime ferrimagnetic material
    for emerging spintronic technologies.
  description_type: abstract
  lang: und

## Creator

- name: Jhantu Pradhan
  role: author
  orcid: https://orcid.org/0009-0004-9427-7007
- name: M. S. Devapriya
  role: author
  orcid: https://orcid.org/0009-0004-2754-9383
- name: Rohiteswar Mondal
  role: author
  orcid: https://orcid.org/0000-0003-4543-5588
- name: Jun Uzuhashi
  role: author
  orcid: https://orcid.org/0000-0003-2023-8158
- name: Tadakatsu Ohkubo
  role: author
  orcid: https://orcid.org/0000-0003-3548-1951
- name: Shinya Kasai
  role: author
  orcid: https://orcid.org/0000-0001-7149-4800
- name: Chandrasekhar Murapaka
  role: author
  orcid: https://orcid.org/0000-0002-0283-7037
- name: Arabinda Haldar
  role: author
  orcid: https://orcid.org/0000-0002-0490-9719

## Contact agent



## Publisher

organization: AIP Publishing

## Managing organization



## Keyword

- subject: spintronics
  schema: not_defined
- subject: ferrimagnet
  schema: not_defined
- subject: inverse spin Hall effect
  schema: not_defined

## Rights

- description: Copyright 2024 Author(s). This article is distributed under a Creative
    Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND) License.
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of Applied Physics
  issn: '00218979'
  volume: '136'
  issue: '20'

## Conference



## Related item



## Funding

- identifier: 59/20/05/2021-BRNS
  funder_name: Board of Research in Nuclear Sciences
- identifier: CRG/2022/005472
  funder_name: Science and Engineering Research Board
- identifier: '09/1001(0095)/2021-EMR-I'
  funder_name: Council of Scientific and Industrial Research, India
- identifier: JP24K00952
  funder_name: Japan Society for the Promotion of Science

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filename: pradhan_jap.docx