# Coulomb interactions and migrating Dirac cones imaged by local quantum oscillations in twisted graphene

https://mdr.nims.go.jp/datasets/8ffe3c80-1f96-49f7-899b-3f0a116a4f9e

## File

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## Id

8ffe3c80-1f96-49f7-899b-3f0a116a4f9e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-02-14T10:02:53.271162Z

## Updated at

2026-02-16T08:03:11.831217Z

## Published at

2026-02-16T04:57:31.942475Z

## Doi



## First published url

https://doi.org/10.1038/s41567-025-02786-z

## Date published

2025-02-14

## Recorded date published

2025-3

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Coulomb interactions and migrating Dirac cones imaged by local quantum oscillations
    in twisted graphene
  title_type: original
  lang: en

## Description

- description: Flat band moiré graphene systems have emerged as a quintessential platform
    to investigate correlated phases of matter. A plethora of interaction-driven ground
    states have been proposed, and yet despite extensive experimental effort, there
    has been little direct evidence that distinguishes between the various phases,
    in particular near charge neutrality point. Here, we use a nanoscale scanning
    superconducting quantum interference device to image the local thermodynamic quantum
    oscillations in alternating-twist trilayer graphene at magnetic fields as low
    as 56 mT, which reveal ultrafine details of the density of states and of the renormalization
    of the single-particle band structure by Coulomb interactions. We find that the
    charging self-energy due to occupied electronic states, is critical in explaining
    the high carrier density physics. At half-filling of the conduction flat band,
    we observe a Stoner-like symmetry breaking, suggesting that it is the most robust
    mechanism in the hierarchy of phase transitions. On approaching charge neutrality,
    where the charging energy is negligible and exchange energy is dominant, we find
    the ground state to be a nematic semimetal which is favored over gapped states
    in the presence of heterostrain. In the revealed semimetallic phase, the flat-band
    Dirac cones migrate towards the mini-Brillouin zone center, spontaneously breaking
    the C_3 rotational symmetry. Our low-field local quantum oscillations technique
    presents an alluring avenue to explore the ground states of diverse strongly interacting
    van der Waals systems.
  description_type: abstract
  lang: und

## Creator

- name: Matan Bocarsly
  role: author
- name: Indranil Roy
  role: author
- name: Vishal Bhardwaj
  role: author
- name: Matan Uzan
  role: author
- name: Patrick Ledwith
  role: author
- name: Gal Shavit
  role: author
- name: Nasrin Banu
  role: author
- name: Yaozhang Zhou
  role: author
- name: Yuri Myasoedov
  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: Yuval Oreg
  role: author
- name: Daniel E. Parker
  role: author
- name: Yuval Ronen
  role: author
- name: Eli Zeldov
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: 'twisted graphene
    '
  schema: not_defined
- subject: Coulomb interactions
  schema: not_defined
- subject: 'local quantum oscillations
    '
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-02-14

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Nature Physics
  issn: '17452473'
  volume: '21'
  issue: '3'
  start_page: 421
  end_page: 429

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## Specimen



## Chemical composition



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## Fileset

- id: 6570c15c-b1f6-44e3-9df2-5ef5d99d4ef3
  filename: s41567-025-02786-z.pdf
  content_type: application/pdf
  size: 7712070
  md5: e7a959250d093e1506871405ca6c14f2

## Thumbnail

fileset_id: 6570c15c-b1f6-44e3-9df2-5ef5d99d4ef3
filename: s41567-025-02786-z.pdf