# Bipolarity of large anomalous Nernst effect in Weyl magnet-based alloy films

https://mdr.nims.go.jp/datasets/56ae975d-a439-4b32-9fb0-2f72222c6082

## Files

- [Noguchi_etal_NPhys-2024.pdf](https://mdr.nims.go.jp/filesets/b3b8feb6-6267-40e3-9215-075fbc1e052b/download) ([Detail](https://mdr.nims.go.jp/filesets/b3b8feb6-6267-40e3-9215-075fbc1e052b.md))

## Id

56ae975d-a439-4b32-9fb0-2f72222c6082

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-02-15T03:41:09.867515Z

## Updated at

2024-07-07T23:30:17.316239Z

## Published at

2024-07-07T23:30:17.646744Z

## Doi

https://doi.org/10.48505/nims.4407

## First published url

https://doi.org/10.1038/s41567-023-02293-z

## Date published

2024-01-08

## Recorded date published

2024-2

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Bipolarity of large anomalous Nernst effect in Weyl magnet-based alloy films
  title_type: original
  lang: en

## Description

- description: A thermopile device converts thermal energy to electrical energy. Controlling
    the polarity of the thermoelectric voltage that such a device generates is an
    important part of enhancing its thermoelectric output. Constructing thermopile
    devices where the mechanism is based on the anomalous Nernst effect in topological
    magnets and where one can control the bipolarity is still hard to do. Here we
    demonstrate the bipolarity of a large anomalous Nernst effect in a series of Weyl
    ferromagnet Co3Sn2S2-based alloy films by tuning the Fermi energy. We illustrate
    the bipolarity of the anomalous Nernst signal originating from the intrinsic Berry
    curvature contribution by systematically regulating the Fermi energy by nickel
    or indium substitution while maintaining a topological band feature of the Weyl
    ferromagnet. The bipolarity enables the construction of the Weyl magnet-based
    anomalous Nernst thermopile that generates large thermoelectric output at zero
    magnetic field. These demonstrations of bipolar large anomalous Nernst effect
    in Co3Sn2S2-based films will stimulate the device development of efficient thermoelectric
    energy conversion exploiting topological magnets.
  description_type: abstract
  lang: und

## Creator

- name: Shun Noguchi
  role: author
- name: Kohei Fujiwara
  role: author
  orcid: https://orcid.org/0000-0002-2164-2462
- name: Yuki Yanagi
  role: author
- name: Michi-To Suzuki
  role: author
  orcid: https://orcid.org/0000-0002-1283-7604
- name: Takamasa Hirai
  role: author
  orcid: https://orcid.org/0000-0002-5577-8018
  organization: National Institute for Materials Science
- name: Takeshi Seki
  role: author
  orcid: https://orcid.org/0000-0003-3195-7051
- name: Ken-ichi Uchida
  role: author
  orcid: https://orcid.org/0000-0001-7680-3051
  organization: National Institute for Materials Science
- name: Atsushi Tsukazaki
  role: author
  orcid: https://orcid.org/0000-0003-0251-063X

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: anomalous Nernst effect
  schema: not_defined
- subject: topological materials
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-01-08
end_date: 2024-07-08

## Journal

- title: Nature Physics
  issn: '17452473'
  volume: '20'
  issue: '2'
  start_page: 254
  end_page: 260

## Conference



## Related item



## Funding

- identifier: 20K05299
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 21H01031
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 21H01789
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 21H04437
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 19H01842
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 22H00288
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: JPMJER2201
  funder_name: MEXT | JST | Exploratory Research for Advanced Technology
- identifier: JPMJCR18T2
  funder_name: MEXT | JST | Core Research for Evolutional Science and Technology

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## Fileset

- id: b3b8feb6-6267-40e3-9215-075fbc1e052b
  filename: Noguchi_etal_NPhys-2024.pdf
  content_type: application/pdf
  size: 376163
  md5: afefac1c9d5ee4bfdd32ba10dcfc7dbf

## Thumbnail

fileset_id: b3b8feb6-6267-40e3-9215-075fbc1e052b
filename: Noguchi_etal_NPhys-2024.pdf