# Transparent Josephson junctions in higher-order topological insulator <math>  <msub>    <mi>WTe</mi>    <mn>2</mn>  </msub></math> via Pd diffusion

https://mdr.nims.go.jp/datasets/8a5237ac-5e8a-4add-8615-a41d1c0c2ab5

## File

- [PhysRevMaterials.6.L081201.pdf](https://mdr.nims.go.jp/filesets/39ea79b5-a518-4596-ab4a-2bd941b957a5/download) ([Detail](https://mdr.nims.go.jp/filesets/39ea79b5-a518-4596-ab4a-2bd941b957a5.md))

## Id

8a5237ac-5e8a-4add-8615-a41d1c0c2ab5

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-27T06:19:26.433632Z

## Updated at

2025-02-28T03:30:13.204336Z

## Published at

2025-02-28T03:30:14.262029Z

## Doi



## First published url

https://doi.org/10.1103/physrevmaterials.6.l081201

## Date published

2022-08-29

## Recorded date published

2022-8

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: "Transparent Josephson junctions in higher-order topological insulator \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>\n
    via Pd diffusion"
  title_type: original
  lang: en

## Description

- description: Highly transparent superconducting contacts to a topological insulator
    (TI) remain a persistent challenge on the route to engineer topological superconductivity.
    Recently, the higher-order TI WTe2 was shown to turn superconducting when placed
    on palladium (Pd) bottom contacts, demonstrating a promising material system in
    perusing this goal. Here, we report the diffusion of Pd into WTe2 and the formation
    of superconducting PdTex as the origin of observed superconductivity. We find
    an atomically sharp interface between the diffusion layer and its host crystal,
    forming state-of-the-art superconducting contacts to a TI. The diffusion is discovered
    to be non-uniform along the width of the WTe2 crystal, with a greater extend along
    the edges compared to the bulk. The potential of this contacting method is highlighted
    in transport measurements on Josephson junctions by employing external superconducting
    leads.
  description_type: abstract
  lang: und

## Creator

- name: Martin Endres
  role: author
- name: Artem Kononov
  role: author
- name: Michael Stiefel
  role: author
- name: Marcus Wyss
  role: author
- name: Hasitha Suriya Arachchige
  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 Physical Society (APS)

## Managing organization



## Keyword

- subject: Superconducting contacts
  schema: not_defined
- subject: topological insulator
  schema: not_defined
- subject: PdTex
  schema: not_defined

## Rights

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

## Other identifier(s)



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## Embargo



## Journal

- title: Physical Review Materials
  issn: '24759953'
  volume: '6'
  issue: '8'
  article_number: L081201

## Conference



## Related item



## Funding

- funder_name: U.S. Department of Energy
- funder_name: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen
    Forschung
- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- funder_name: Swiss Nanoscience Institute
- funder_name: Office of Science
- funder_name: Basic Energy Sciences
- identifier: GBMF9069
  funder_name: Gordon and Betty Moore Foundation
- identifier: JPMJCR15F3
  funder_name: Core Research for Evolutional Science and Technology

## Instrument



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## Measurement method



## Specimen



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## Fileset

- id: 39ea79b5-a518-4596-ab4a-2bd941b957a5
  filename: PhysRevMaterials.6.L081201.pdf
  content_type: application/pdf
  size: 4088016
  md5: 5496d83ffcce658822e4186ada5407ef

## Thumbnail

fileset_id: 39ea79b5-a518-4596-ab4a-2bd941b957a5
filename: PhysRevMaterials.6.L081201.pdf