# Gate-defined superconducting channel in magic-angle twisted bilayer graphene

https://mdr.nims.go.jp/datasets/1b7aa67e-059a-4d13-abb0-8488ce9ca92e

## Files

- [PhysRevResearch.6.L012051.pdf](https://mdr.nims.go.jp/filesets/0e166bc6-83b1-447a-a758-29b475a4cb06/download) ([Detail](https://mdr.nims.go.jp/filesets/0e166bc6-83b1-447a-a758-29b475a4cb06.md))

## Id

1b7aa67e-059a-4d13-abb0-8488ce9ca92e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-18T02:56:27.632786Z

## Updated at

2025-02-23T13:47:15.799911Z

## Published at

2025-02-23T13:47:15.896864Z

## Doi



## First published url

https://doi.org/10.1103/physrevresearch.6.l012051

## Date published

2024-03-06

## Recorded date published

2024-3

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Gate-defined superconducting channel in magic-angle twisted bilayer graphene
  title_type: original
  lang: en

## Description

- description: Magic-angle twisted bilayer graphene (MATBG) combines in one single
    material different phases like insulating, metallic and superconducting. These
    phases and their in-situ tunability make MATBG an important platform for the fabrication
    of superconducting devices. We realize a split gate-defined geometry which enables
    us to tune the width of a superconducting channel formed in MATBG. We observe
    a smooth transition from superconductivity to highly resistive transport by progressively
    reducing the channel width using the split gates or by reducing the density in
    the channel. Using the gate-defined constriction, we control the flow of the supercurrent,
    either guiding it through the constriction or throughout the whole device or even
    blocking its passage completely. This serves as a foundation for developing quantum
    constriction devices like superconducting quan- tum point contacts, quantum dots,
    and Cooper-pair boxes in MATBG.
  description_type: abstract
  lang: und

## Creator

- name: Giulia Zheng
  role: author
- name: Elías Portolés
  role: author
- name: Alexandra Mestre-Torà
  role: author
- name: Marta Perego
  role: author
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Peter Rickhaus
  role: author
- name: Folkert K. de Vries
  role: author
- name: Thomas Ihn
  role: author
- name: Klaus Ensslin
  role: author
- name: Shuichi Iwakiri
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Magic-angle
  schema: not_defined
- subject: superconducting devices
  schema: not_defined
- subject: split-gate
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review Research
  issn: '26431564'
  volume: '6'
  issue: '1'
  article_number: L012051

## Conference



## Related item



## Funding

- identifier: '951541'
  funder_name: European Research Council
- identifier: 51NF40-185902
  funder_name: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen
    Forschung
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: 23H02052
  funder_name: Japan Society for the Promotion of Science
- funder_name: Ministry of Education, Culture, Sports, Science and Technology

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 0e166bc6-83b1-447a-a758-29b475a4cb06
  filename: PhysRevResearch.6.L012051.pdf
  content_type: application/pdf
  size: 2406905
  md5: 0103acd859056de2da1099ae10ea90a2

## Thumbnail

fileset_id: 0e166bc6-83b1-447a-a758-29b475a4cb06
filename: PhysRevResearch.6.L012051.pdf