# One-Dimensional Edge Transport in Few-Layer WTe<sub>2</sub>

https://mdr.nims.go.jp/datasets/252a3d03-b581-4b5b-9693-0ca8dc48bdb8

## File

- [acs.nanolett.0c00658.pdf](https://mdr.nims.go.jp/filesets/29ef0236-1e2a-427b-8ece-41078a1a9de3/download) ([Detail](https://mdr.nims.go.jp/filesets/29ef0236-1e2a-427b-8ece-41078a1a9de3.md))

## Id

252a3d03-b581-4b5b-9693-0ca8dc48bdb8

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-25T06:48:42.165523Z

## Updated at

2025-02-26T03:30:59.176380Z

## Published at

2025-02-26T03:30:59.271181Z

## Doi



## First published url

https://doi.org/10.1021/acs.nanolett.0c00658

## Date published

2020-06-10

## Recorded date published

2020-6-10

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: One-Dimensional Edge Transport in Few-Layer WTe<sub>2</sub>
  title_type: original
  lang: en

## Description

- description: WTe2 is a layered transitional metal dichalcogenide (TMD) with a number
    of intriguing topological properties. The bulk crystal is a Weyl semimetal with
    Fermi arc surface states and the monolayer is a two-dimensional (2D) topological
    insulator. Recently, WTe2 was also predicted to be a higher-order topological
    insulator (HOTI) with hinge states along the edges. The gapless nature of WTe2
    complicates the observation of one-dimensional (1D) topological states in transport,
    due to their small contribution relative to the bulk. Here, the Josephson effect
    can help to detect edge transport, since the evolution of the critical current
    in magnetic field is sensitive to the spatial current distribution. Here, we employ
    superconducting contacts in WTe2 that emerge when Pd is placed in contact with
    the TMD to define Josephson junctions. Using the Josephson effect, we demonstrate
    the presence of 1D current carrying states residing on the edges and steps of
    few-layers WTe2 crystals. The width of the 1D current-carrying states is deduced
    to be below 80 nm. A supercurrent Ic is measured over distances up to 3 μm and
    persisting in magnetic fields up to B = 2 T. This observation is in good agreement
    with the recent prediction of HOTI states in WTe2. Moreover, the observed dependencies
    of Ic(B) on magnetic field demonstrate a particular symmetry with the direction
    of the current and the magnetic field, which matches the pre- diction for topological
    states in systems with broken inversion symmetry. Our observation adds another
    effect to a plethora of intriguing properties of WTe2 and potentially provides
    a new platform for obtaining Majorana Zero Modes.
  description_type: abstract
  lang: und

## Creator

- name: Artem Kononov
  role: author
- name: Gulibusitan Abulizi
  role: author
- name: Kejian Qu
  role: author
- name: Jiaqiang Yan
  role: author
- name: David Mandrus
  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: Christian Schönenberger
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: WTe2
  schema: not_defined
- subject: topological insulator
  schema: not_defined
- subject: Josephson effect
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '20'
  issue: '6'
  start_page: 4228
  end_page: 4233

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## Funding

- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- funder_name: Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen
    Forschung
- identifier: JPMJCR15F3
  funder_name: Core Research for Evolutional Science and Technology
- funder_name: Office of Science
- identifier: '787414'
  funder_name: H2020 European Research Council
- funder_name: Georg H. Endress foundation
- funder_name: Swiss Nanoscience Institute

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## Fileset

- id: 29ef0236-1e2a-427b-8ece-41078a1a9de3
  filename: acs.nanolett.0c00658.pdf
  content_type: application/pdf
  size: 1977386
  md5: 745e4d472822185e759945b18f60bd15

## Thumbnail

fileset_id: 29ef0236-1e2a-427b-8ece-41078a1a9de3
filename: acs.nanolett.0c00658.pdf