# Odd-even layer-number effect of valence-band spin splitting in <math>  <msub>    <mi>WTe</mi>    <mn>2</mn>  </msub></math>

https://mdr.nims.go.jp/datasets/7ed2f475-2a8f-45c1-9016-569b90fff43f

## File

- [PhysRevResearch.4.023247.pdf](https://mdr.nims.go.jp/filesets/c315a3ba-1a55-48d5-a808-94f8cb144569/download) ([Detail](https://mdr.nims.go.jp/filesets/c315a3ba-1a55-48d5-a808-94f8cb144569.md))

## Id

7ed2f475-2a8f-45c1-9016-569b90fff43f

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-27T06:23:31.230339Z

## Updated at

2025-02-28T03:30:18.698549Z

## Published at

2025-02-28T03:30:18.906582Z

## Doi



## First published url

https://doi.org/10.1103/physrevresearch.4.023247

## Date published

2022-06-27

## Recorded date published

2022-6

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: "Odd-even layer-number effect of valence-band spin splitting in \n<mml:math
    xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"><mml:msub><mml:mi>WTe</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>"
  title_type: original
  lang: en

## Description

- description: 'When a crystal becomes thinner and thinner to the atomic level, peculiar
    phenomena discretely depending on its layer-numbers (n) start to appear. The symmetry
    and wave functions strongly reflect the layer-numbers and stacking order, which
    brings us a potential of realizing new properties and functions that is unexpected
    in either bulk or simple monolayer. Multilayer WTe2 is one such example exhibiting
    unique ferroelectricity and non-linear transport properties related to the antiphase
    stacking and Berry-curvature dipole. Here we investigate the electronic band dispersions
    of multilayer WTe2 (2-5 layers), by performing laser-based micro-focused angle-resolved
    photoelectron spectroscopy on exfoliated-flakes that are strictly sorted by n
    and encapsulated by graphene. We clearly observed the insulator-semimetal transition
    occurring between 2 and 3-layers, as well as the 30-70 meV spin-splitting of valence
    bands manifesting in even n as a signature of stronger structural asymmetry. Our
    result fully demonstrates the possibility of the large energy-scale band and spin
    manipulation through the finite n stacking procedure.  '
  description_type: abstract
  lang: und

## Creator

- name: Masato Sakano
  role: author
- name: Yuma Tanaka
  role: author
- name: Satoru Masubuchi
  role: author
- name: Shota Okazaki
  role: author
- name: Takuya Nomoto
  role: author
- name: Atsushi Oshima
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Ryotaro Arita
  role: author
- name: Takao Sasagawa
  role: author
- name: Tomoki Machida
  role: author
- name: Kyoko Ishizaka
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: WTe2
  schema: not_defined
- subject: valence bands
  schema: not_defined
- subject: spin splitting
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Physical Review Research
  issn: '26431564'
  volume: '4'
  issue: '2'
  article_number: '023247'

## Conference



## Related item



## Funding

- identifier: JPMJCR15F3
  funder_name: Core Research for Evolutional Science and Technology
- identifier: JPMJCR16F2
  funder_name: Core Research for Evolutional Science and Technology
- identifier: JPMJCR20B4
  funder_name: Core Research for Evolutional Science and Technology
- identifier: JP20H00127
  funder_name: Japan Society for the Promotion of Science
- identifier: JP20H00354
  funder_name: Japan Society for the Promotion of Science
- identifier: JP20H01834
  funder_name: Japan Society for the Promotion of Science
- identifier: JP21H05232
  funder_name: Japan Society for the Promotion of Science
- identifier: JP21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: JP21H05234
  funder_name: Japan Society for the Promotion of Science
- identifier: JP21H05235
  funder_name: Japan Society for the Promotion of Science
- identifier: JP21H05236
  funder_name: Japan Society for the Promotion of Science
- funder_name: Japan Science and Technology Agency

## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



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## Computational method



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## Fileset

- id: c315a3ba-1a55-48d5-a808-94f8cb144569
  filename: PhysRevResearch.4.023247.pdf
  content_type: application/pdf
  size: 5552463
  md5: 7913291d00274e5213be5c1507aec374

## Thumbnail

fileset_id: c315a3ba-1a55-48d5-a808-94f8cb144569
filename: PhysRevResearch.4.023247.pdf