# Energy-Efficient Single Layer Spin Hall Nano-Oscillators Driven by Berry Curvature

https://mdr.nims.go.jp/datasets/b04574f5-1aab-406f-9996-4d4bf10807af

## File

- [åkerman-et-al-2025-energy-efficient-single-layer-spin-hall-nano-oscillators-driven-by-berry-curvature.pdf](https://mdr.nims.go.jp/filesets/401ea667-8320-40f5-a6da-05af6d01d96b/download) ([Detail](https://mdr.nims.go.jp/filesets/401ea667-8320-40f5-a6da-05af6d01d96b.md))
- [nn5c02048_si_001.pdf](https://mdr.nims.go.jp/filesets/03d28efa-af2a-410a-b9f5-3345a28610bd/download) ([Detail](https://mdr.nims.go.jp/filesets/03d28efa-af2a-410a-b9f5-3345a28610bd.md))

## Id

b04574f5-1aab-406f-9996-4d4bf10807af

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-07-31T05:55:22.418466Z

## Updated at

2025-08-01T03:30:21.614043Z

## Published at

2025-08-01T03:18:18.533587Z

## Doi



## First published url

https://doi.org/10.1021/acsnano.5c02048

## Date published

2025-05-20

## Recorded date published

2025-5-20

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Energy-Efficient Single Layer Spin Hall Nano-Oscillators Driven by Berry
    Curvature
  title_type: original
  lang: en

## Description

- description: Spin Hall nano-oscillators (SHNOs) are emerging spintronic oscillators
    with significant potential for technological applications, including microwave
    signal generation, and unconventional computing. Despite their promising applications,
    SHNOs face various challenges, such as high energy consumption and difficulties
    in growing high-quality thin film heterostructures with clean interfaces. Here,
    single-layer topological magnetic Weyl semimetals open a possible solution as
    they possess both intrinsic ferromagnetism and a large spin–orbit coupling due
    to their topological properties. However, producing such high-quality thin films
    of magnetic Weyl semimetals that retain their topological properties and Berry
    curvature remains a challenge. We address these issues with high-quality single-layer
    epitaxial ferromagnetic Co2MnGa Weyl semimetal thin film-based SHNOs. We observe
    a giant spin Hall conductivity, σ_SHC = (6.08 ± 0.02) × 105 (ℏ/2e) Ω^–1 m^–1,
    which is an order of magnitude higher than previous reports. Theoretical calculations
    corroborate the experimental results with a large intrinsic spin Hall conductivity
    due to presence of a strong Berry curvature. Further, self spin-orbit torque driven
    magnetization auto-oscillations are demonstrated for the first time, at an ultralow
    threshold current density of J_th = 6.2 × 10^11 A m^–2. These findings indicate
    that magnetic Weyl semimetals have tremendous application potential for developing
    energy-efficient spintronic devices.
  description_type: abstract
  lang: und

## Creator

- name: Lakhan Bainsla
  role: author
  orcid: https://orcid.org/0000-0001-9626-4278
- name: Yuya Sakuraba
  role: author
  orcid: https://orcid.org/0000-0003-4618-9550
- name: Akash Kumar
  role: author
- name: Avinash Kumar Chaurasiya
  role: author
  orcid: https://orcid.org/0000-0002-3063-5707
- name: Keisuke Masuda
  role: author
  orcid: https://orcid.org/0000-0002-6884-6390
- name: Nattamon Suwannaharn
  role: author
  orcid: https://orcid.org/0000-0003-1285-599X
- name: Ahmad A. Awad
  role: author
- name: Nilamani Behera
  role: author
- name: Roman Khymyn
  role: author
- name: Taisuke Sasaki
  role: author
  orcid: https://orcid.org/0000-0002-5952-7638
- name: Saroj Prasad Dash
  role: author
  orcid: https://orcid.org/0000-0001-7931-4843
- name: Johan Åkerman
  role: author
  orcid: https://orcid.org/0000-0002-3513-6608

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Berry Curvature
  schema: not_defined
- subject: Spin Hall Nano-Oscillator
  schema: not_defined
- subject: Magnetization Auto-Oscillation
  schema: not_defined
- subject: Microfocused Brillouin Light Scattering
  schema: not_defined
- subject: Intrinsic Spin-orbit Torque
  schema: not_defined
- subject: Magnetic Weyl Semimetal
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: ACS Nano
  issn: '19360851'
  volume: '19'
  issue: '19'
  start_page: 18534
  end_page: 18544

## Conference



## Related item



## Funding

- identifier: 2016-05980
  funder_name: Swedish Research Council
- identifier: '3149159'
  funder_name: Ministry of Electronics and Information technology
- identifier: 2021-05925
  funder_name: European Commission
- identifier: '896307'
  funder_name: European Commission
- identifier: JP21H01608
  funder_name: Japan Society for the Promotion of Science
- identifier: 835068 TOPSPIN
  funder_name: European Commission

## 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



## Software



## Custom property



## Fileset

- id: 401ea667-8320-40f5-a6da-05af6d01d96b
  filename: åkerman-et-al-2025-energy-efficient-single-layer-spin-hall-nano-oscillators-driven-by-berry-curvature.pdf
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  size: 9207172
  md5: f66693480b2bd58e8d5d8cabcedfa74e
- id: 03d28efa-af2a-410a-b9f5-3345a28610bd
  filename: nn5c02048_si_001.pdf
  content_type: application/pdf
  size: 721604
  md5: 24f131b2994e752ea16dfa58d8bd0389

## Thumbnail

fileset_id: 401ea667-8320-40f5-a6da-05af6d01d96b
filename: åkerman-et-al-2025-energy-efficient-single-layer-spin-hall-nano-oscillators-driven-by-berry-curvature.pdf