# Probing the tunable multi-cone band structure in Bernal bilayer graphene

https://mdr.nims.go.jp/datasets/da51d08a-6b7a-413b-b96a-7f18eb90ad1e

## File

- [s41467-024-47342-0.pdf](https://mdr.nims.go.jp/filesets/39544240-72da-4e67-b453-5ca414cd3e12/download) ([Detail](https://mdr.nims.go.jp/filesets/39544240-72da-4e67-b453-5ca414cd3e12.md))

## Id

da51d08a-6b7a-413b-b96a-7f18eb90ad1e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-26T06:06:21.324917Z

## Updated at

2025-02-27T03:30:23.783149Z

## Published at

2025-02-27T03:30:23.909283Z

## Doi



## First published url

https://doi.org/10.1038/s41467-024-47342-0

## Date published

2024-04-11

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Probing the tunable multi-cone band structure in Bernal bilayer graphene
  title_type: original
  lang: en

## Description

- description: Controlling the bandstructure of Dirac materials is of wide interest
    in current research but has remained an outstanding challenge for systems such
    as monolayer graphene. In contrast, Bernal bilayer graphene (BLG) offers a highly
    flexible platform for tuning the bandstructure. One direction is opening the bandgap
    by a transverse displacement field, a property which is well established and widely
    used. Another appealing direction is accessing the complex BLG bands consisting
    of mini Dirac cones with opposite chiralities occurring at low displacement field
    near charge neutrality, and tuning them through topological transitions and van
    Hove singularities. Even though BLG was extensively studied experimentally in
    the last two decades, the evidence of this exotic, linear bandstructure is still
    elusive, likely due to insufficient energy resolution. Here, rather than probing
    the bandstructure using spectroscopy, we use Landau levels as markers of the energy
    dispersion and carefully analyze the Landau level spectrum in a regime where the
    cyclotron orbits of electrons or holes in momentum space are small enough to resolve
    the distinct mini Dirac cones. We identify the presence of four distinct Dirac
    cones and map out complex topological transitions induced by electric displacement
    field. These findings introduce a valuable addition to the toolkit for graphene
    electronics.
  description_type: abstract
  lang: und

## Creator

- name: Anna M. Seiler
  role: author
- name: Nils Jacobsen
  role: author
- name: Martin Statz
  role: author
- name: Noelia Fernandez
  role: author
- name: Francesca Falorsi
  role: author
- 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: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Zhiyu Dong
  role: author
- name: Leonid S. Levitov
  role: author
- name: R. Thomas Weitz
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: ernal bilayer graphene
  schema: not_defined
- subject: band structure
  schema: not_defined
- subject: Landau levels
  schema: not_defined

## Rights

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

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## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '15'
  issue: '1'
  article_number: '3133'

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## Funding

- identifier: SFB 1073
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: SPP 2244
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: SFB 1073
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: SPP 2244
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: KAKENHI 21H05233 and 23H02052
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: KAKENHI 21H05233 and 23H02052
  funder_name: MEXT | Japan Society for the Promotion of Science

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## Fileset

- id: 39544240-72da-4e67-b453-5ca414cd3e12
  filename: s41467-024-47342-0.pdf
  content_type: application/pdf
  size: 1436085
  md5: f2dc2c6b397246a081394d9f1b0e9592

## Thumbnail

fileset_id: 39544240-72da-4e67-b453-5ca414cd3e12
filename: s41467-024-47342-0.pdf