# Electric Field-Tunable Superconductivity with Competing Orders in Twisted Bilayer Graphene near the Magic Angle

https://mdr.nims.go.jp/datasets/d86b507f-6c5d-4a9c-9c7e-ce3640b319dd

## File

- [2025A00284G_Manuscript_Tunable_SC_ACSNano.pdf](https://mdr.nims.go.jp/filesets/580499cc-f611-4d2e-b688-4540cf91975a/download) ([Detail](https://mdr.nims.go.jp/filesets/580499cc-f611-4d2e-b688-4540cf91975a.md))

## Id

d86b507f-6c5d-4a9c-9c7e-ce3640b319dd

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-07-28T00:19:36.435038Z

## Updated at

2026-07-28T01:43:00.344031Z

## Published at

2026-07-28T03:27:24.047467Z

## Doi



## First published url

https://doi.org/10.1021/acsnano.4c12770

## Date published

2025-02-11

## Recorded date published

2025-2-11

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Electric Field-Tunable Superconductivity with Competing Orders in Twisted
    Bilayer Graphene near the Magic Angle
  title_type: original
  lang: en

## Description

- description: Superconductivity (SC) in twisted bilayer graphene (tBLG) has been
    explored by varying carrier concentrations, twist angles, and screening strength,
    with the aim of uncovering its origin and possible connections to strong electronic
    correlations in narrow bands and various resulting broken symmetries. However,
    the link between the tBLG band structure and the onset of SC and other orders
    largely remains unclear. In this study, we address this crucial gap by examining
    in situ band structure tuning of a near magic-angle (θ ≈ 0.95°) tBLG device with
    a displacement field (D) and reveal competition between SC and other broken symmetries.
    At zero D, the device exhibits superconducting signatures without the resistance
    peak at half-filling, a characteristic signature with a strong electronic correlation.
    As D increases, the SC is suppressed, accompanied by the appearance of a resistance
    peak at half-filling. Hall density measurements reveal that at zero D, SC arises
    around the van Hove singularity (vHs) from an isospin or spin-valley unpolarized
    band. At higher D, the suppression of SC coincides with broken isospin symmetry
    near half-filling with lifted degeneracy (gd ∼ 2). Additionally, as the SC phase
    becomes weaker with D, vHs shifts to higher fillings, highlighting the modification
    of the underlying band structure with the applied electric field. These findings,
    with recent theoretical study on SC in tBLG, highlight the competition, rather
    than being connected concomitantly, between SC and other orders promoted by broken
    symmetries.
  description_type: abstract
  lang: en

## Creator

- name: Ranit Dutta
  role: author
- name: Ayan Ghosh
  role: author
- name: Shinjan Mandal
  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: H. R. Krishnamurthy
  role: author
- name: Sumilan Banerjee
  role: author
- name: Manish Jain
  role: author
- name: Anindya Das
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Twisted bilayer graphene
  schema: not_defined
- subject: Superconductivity
  schema: not_defined
- subject: Van Hove singularity
  schema: not_defined

## Rights

- identifier: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: ACS Nano
  issn: 1936086X
  volume: '19'
  issue: '5'
  start_page: 5353
  end_page: 5362

## Conference



## Related item



## Funding

- identifier: 20H00354
  funder_name: Japan Society for the Promotion of Science
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: INSA/SP/SS/2023/
  funder_name: Indian National Science Academy
- identifier: SP/IFCP-22-0005
  funder_name: Indo-French Centre for the Promotion of Advanced Research
- identifier: DST/NSM/R&D HPC Applications/2021/23
  funder_name: Science and Engineering Research Board
- identifier: IPA/2020/000034
  funder_name: Science and Engineering Research Board
- identifier: SB/DF/005/2017
  funder_name: Science and Engineering Research Board
- identifier: SP/SERB-22-0387
  funder_name: Science and Engineering Research Board
- identifier: DST/NM/TUE/QM-5/2019(C)/1
  funder_name: Nano Mission Council
- identifier: 19H05790
  funder_name: Japan Society for the Promotion of Science

## 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



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## Custom property



## Fileset

- id: 580499cc-f611-4d2e-b688-4540cf91975a
  filename: 2025A00284G_Manuscript_Tunable_SC_ACSNano.pdf
  content_type: application/pdf
  size: 8712211
  md5: 87838f275c59913e43cdab2acc971861

## Thumbnail

fileset_id: 580499cc-f611-4d2e-b688-4540cf91975a
filename: 2025A00284G_Manuscript_Tunable_SC_ACSNano.pdf