# Supercurrent mediated by helical edge modes in bilayer graphene

https://mdr.nims.go.jp/datasets/6a9e2f44-9891-4d3e-80e2-5351da273587

## File

- [s41467-024-44952-6.pdf](https://mdr.nims.go.jp/filesets/3862e1f6-e89c-446b-85c7-eda796f12319/download) ([Detail](https://mdr.nims.go.jp/filesets/3862e1f6-e89c-446b-85c7-eda796f12319.md))

## Id

6a9e2f44-9891-4d3e-80e2-5351da273587

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-07T06:17:02.262040Z

## Updated at

2025-02-08T03:30:24.396370Z

## Published at

2025-02-08T03:30:24.570492Z

## Doi



## First published url

https://doi.org/10.1038/s41467-024-44952-6

## Date published

2024-01-29

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Supercurrent mediated by helical edge modes in bilayer graphene
  title_type: original
  lang: en

## Description

- description: Bilayer graphene encapsulated in tungsten diselenide can host a weak
    topological phase with pairs of helical edge states. The electrical tunability
    of this phase makes it an ideal platform to investigate unique topological effects
    at zero magnetic field, such as topological superconductivity. Here we couple
    the helical edges of such a heterostructure to a superconductor. The inversion
    of the bulk gap accompanied by helical states near zero displacement field leads
    to the suppression of the critical current in a Josephson geometry. Using superconducting
    quantum interferometry we observe an even-odd effect in the Fraunhofer interference
    pattern within the inverted gap phase. We show theoretically that this effect
    is a direct consequence of the emergence of helical modes that connect the two
    edges of the sample. The absence of such an effect at high displacement field,
    as well as in bare bilayer graphene junctions, confirms this interpretation and
    demonstrates the topological nature of the inverted gap. Our results demonstrate
    the coupling of superconductivity to zero-field topological states in graphene.
  description_type: abstract
  lang: und

## Creator

- name: Prasanna Rout
  role: author
- name: Nikos Papadopoulos
  role: author
- name: Fernando Peñaranda
  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: Elsa Prada
  role: author
- name: Pablo San-Jose
  role: author
- name: Srijit Goswami
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Bilayer graphene
  schema: not_defined
- subject: topological phase
  schema: not_defined
- subject: superconducting quantum interferometry
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '15'
  issue: '1'
  article_number: '856'

## Conference



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## Instrument



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Computational method



## Energy level/transition state



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## Custom property



## Fileset

- id: 3862e1f6-e89c-446b-85c7-eda796f12319
  filename: s41467-024-44952-6.pdf
  content_type: application/pdf
  size: 1457403
  md5: 1ed325948d9e5f38865afec2a87935e4

## Thumbnail

fileset_id: 3862e1f6-e89c-446b-85c7-eda796f12319
filename: s41467-024-44952-6.pdf