# Switchable Chern Insulators and Competing Quantum Phases in Rhombohedral Graphene Moiré Superlattices

https://mdr.nims.go.jp/datasets/eb4e0a29-7314-45c7-80e6-3763a06453f5

## File

- [2025A01367G_LD19798 - Switchable Chern insulators and competing quantum phases in rhombohedral graphene moire superlattices-Latest Version.pdf](https://mdr.nims.go.jp/filesets/533ceb88-0ba2-44a1-b4d2-e0b7c6ff13da/download) ([Detail](https://mdr.nims.go.jp/filesets/533ceb88-0ba2-44a1-b4d2-e0b7c6ff13da.md))

## Id

eb4e0a29-7314-45c7-80e6-3763a06453f5

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-06-25T07:18:09.251888Z

## Updated at

2026-06-26T07:56:46.565047Z

## Published at

2026-06-26T23:28:02.240380Z

## Doi



## First published url

https://doi.org/10.1103/chsq-ndzs

## Date published

2025-09-26

## Recorded date published

2025-9

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Switchable Chern Insulators and Competing Quantum Phases in Rhombohedral
    Graphene Moiré Superlattices
  title_type: original
  lang: en

## Description

- description: "Graphene-based moiré superlattices provide a versatile platform for
    exploring novel correlated and topological electronic states, driven by enhanced
    Coulomb interactions within flat bands. The intrinsic tunability of graphene’s
    multiple degrees of freedom enables precise control over these complex quantum
    phases. In this study, we observe a range of competing phases and their transitions
    in rhombohedral stacked hexalayer graphene on hexagonal boron nitride (\U0001D45F−6⁢G⁡/hBN)
    moiré superlattices. When electrons are polarized away from the moiré superlattice,
    we first identify a Chern insulator with reversible Chern numbers at \U0001D463=1
    (one electron per moiré cell), revealing a competition between bulk and edge orbital
    magnetization. At \U0001D463=2, three distinct insulating phases—spin-antiferromagnetic,
    spin-polarized, and valley-polarized—emerge under vertical displacement field
    \U0001D437 and magnetic field \U0001D435⊥, governed by hierarchical isospin symmetry
    breaking. Furthermore, charge density wave (CDW) states at \U0001D708=1/3 and
    2/3, along with a magnetic-field-induced stripe phase at \U0001D708=1/2, demonstrate
    tunable correlated orders at fractional fillings. Our findings reveal a rich interplay
    of charge, isospin, topology, and magnetic field in rhombohedral graphene moiré
    superlattices."
  description_type: abstract
  lang: en

## Creator

- name: Jian Zheng
  role: author
- name: Size Wu
  role: author
- name: Kai Liu
  role: author
- name: Bosai Lyu
  role: author
- name: Shuhan Liu
  role: author
- name: Yating Sha
  role: author
- name: Zhengxian Li
  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: Jinfeng Jia
  role: author
- name: Zhiwen Shi
  role: author
- name: Guorui Chen
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)
ror: https://ror.org/

## Managing organization



## Keyword

- subject: Rhombohedral graphene
  schema: not_defined
- subject: Moiré superlattice
  schema: not_defined
- subject: Chern insulator
  schema: not_defined

## Rights

- description: "@ American Physical Society"
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review Letters
  issn: '10797114'
  volume: '135'
  issue: '13'
  start_page: 136302
  end_page: 136302
  article_number: '136302'

## Conference



## Related item



## Funding

- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- funder_name: Yangyang Development Fund
- identifier: GZB20250795
  funder_name: Postdoctoral Fellowship Program of CPSF
- identifier: '12350005'
  funder_name: National Natural Science Foundation of China
- identifier: '12174248'
  funder_name: National Natural Science Foundation of China
- identifier: '12488101'
  funder_name: National Natural Science Foundation of China
- identifier: 2021YFA1400100
  funder_name: National Key Research and Development Program of China
- identifier: 2020YFA0309000
  funder_name: National Key Research and Development Program of China
- identifier: 24LZ1401100
  funder_name: Science and Technology Innovation Plan Of Shanghai Science and Technology
    Commission
- identifier: 20H00354
  funder_name: Japan Society for the Promotion of Science
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: 23H02052
  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



## Software



## Custom property



## Fileset

- id: 533ceb88-0ba2-44a1-b4d2-e0b7c6ff13da
  filename: 2025A01367G_LD19798 - Switchable Chern insulators and competing quantum
    phases in rhombohedral graphene moire superlattices-Latest Version.pdf
  content_type: application/pdf
  size: 1323851
  md5: 010ed2f0dcda86dbe2ac8233dc44ca5a

## Thumbnail

fileset_id: 533ceb88-0ba2-44a1-b4d2-e0b7c6ff13da
filename: 2025A01367G_LD19798 - Switchable Chern insulators and competing quantum
  phases in rhombohedral graphene moire superlattices-Latest Version.pdf