# Layer-polarized ferromagnetism in rhombohedral multilayer graphene

https://mdr.nims.go.jp/datasets/e832b97e-baac-4431-bd47-ca1b5c5db6d3

## File

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## Id

e832b97e-baac-4431-bd47-ca1b5c5db6d3

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-07T05:57:24.558714Z

## Updated at

2025-02-07T07:30:55.282926Z

## Published at

2025-02-07T07:30:55.405482Z

## Doi



## First published url

https://doi.org/10.1038/s41467-024-46913-5

## Date published

2024-03-22

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Layer-polarized ferromagnetism in rhombohedral multilayer graphene
  title_type: original
  lang: en

## Description

- description: The topological electronic structure of crystalline materials often
    gives rise to intriguing surface states, such as Dirac surface states in topological
    insulators, Fermi arc surface states in Dirac semimetals, and topological superconductivity
    in iron-based superconductors. Recently, rhombohedral multilayer graphene has
    emerged as a promising platform for exploring exotic surface states due to its
    hosting of topologically protected surface flat bands at low energy, with the
    layer-dependent energy dispersion. These flat bands can promote electron correlations,
    leading to a plethora of quantum phenomena, including spontaneous symmetry breaking,
    superconductivity, ferromagnetism, and topological Chern insulators. Nevertheless,
    the intricate connection between the surface flat bands in rhombohedral multilayer
    graphene and the highly dispersive high-energy bands hinders the exploration of
    correlated surface states. Here, we present a method to isolate the surface flat
    bands of rhombohedral heptalayer (7L) graphene by introducing moiré superlattices.
    The pronounced screening effects observed in the moiré potential-modulated rhombohedral
    7L graphene indicate its essential three-dimensional (3D) nature. The isolated
    surface flat bands favor correlated states on the surface in the regions away
    from charge-neutrality points. Most notably, we observe tunable surface ferromagnetism,
    manifested as an anomalous Hall effect with hysteresis loops, which is achieved
    by polarizing surface states using finite displacement fields. Our work establishes
    rhombohedral multilayer graphene moiré superlattice as a unique 3D system for
    exploring correlated surface states.
  description_type: abstract
  lang: und

## Creator

- name: Wenqiang Zhou
  role: author
- name: Jing Ding
  role: author
- name: Jiannan Hua
  role: author
- name: Le Zhang
  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: Wei Zhu
  role: author
- name: Shuigang Xu
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Flat-band systems
  schema: not_defined
- subject: ferromagnetism
  schema: not_defined
- subject: rhombohedral graphene
  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: '2597'

## Conference



## Related item



## Funding

- identifier: '12274354'
  funder_name: National Natural Science Foundation of China
- identifier: XHD23A2001
  funder_name: Natural Science Foundation of Zhejiang Province
- identifier: LR24A040003
  funder_name: Natural Science Foundation of Zhejiang Province

## Instrument



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## Measurement method



## Specimen



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## Fileset

- id: aa2f1a2d-3d55-42d9-b1c1-664c31bd2cec
  filename: s41467-024-46913-5.pdf
  content_type: application/pdf
  size: 5851601
  md5: 80069164886eb684e4863c3ff68bafcf

## Thumbnail

fileset_id: aa2f1a2d-3d55-42d9-b1c1-664c31bd2cec
filename: s41467-024-46913-5.pdf