# Extended quantum anomalous Hall states in graphene/hBN moiré superlattices

https://mdr.nims.go.jp/datasets/523df9ee-912b-4416-9f01-e60c70e474ba

## File

- [2025A00296G_485078_2_merged_1732807795.pdf](https://mdr.nims.go.jp/filesets/e29e58ae-f947-41ec-b0eb-06f16223a711/download) ([Detail](https://mdr.nims.go.jp/filesets/e29e58ae-f947-41ec-b0eb-06f16223a711.md))

## Id

523df9ee-912b-4416-9f01-e60c70e474ba

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-07-02T04:26:50.280066Z

## Updated at

2026-07-03T07:26:43.444750Z

## Published at

2026-07-03T09:30:19.427791Z

## Doi



## First published url

https://doi.org/10.1038/s41586-024-08470-1

## Date published

2025-01-30

## Recorded date published

2025-1-30

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Extended quantum anomalous Hall states in graphene/hBN moiré superlattices
  title_type: original
  lang: en

## Description

- description: 'Electrons in topological flat bands can form new topological states
    driven by correlation effects. The pentalayer rhombohedral graphene/hexagonal
    boron nitride (hBN) moiré superlattice was shown to host fractional quantum anomalous
    Hall effect (FQAHE) at approximately 400 mK (ref.), triggering discussions around
    the underlying mechanism and role of moiré effects. In particular, new electron
    crystal states with non-trivial topology have been proposed. Here we report electrical
    transport measurements in rhombohedral pentalayer and tetralayer graphene/hBN
    moiré superlattices at electronic temperatures down to below 40 mK. We observed
    two more fractional quantum anomalous Hall (FQAH) states and smaller Rxx values
    in pentalayer devices than those previously reported. In the new tetralayer device,
    we observed FQAHE at moiré filling factors v = 3/5 and 2/3. With a small current
    at the base temperature, we observed a new extended quantum anomalous Hall (EQAH)
    state and magnetic hysteresis, where Rxy = h/e2 and vanishing Rxx spans a wide
    range of v from 0.5 to 1.3. At increased temperature or current, EQAH states disappear
    and partially transition into the FQAH liquid16,17,18. Furthermore, we observed
    displacement field-induced quantum phase transitions from the EQAH states to the
    Fermi liquid, FQAH liquid and the likely composite Fermi liquid. Our observations
    established a new topological phase of electrons with quantized Hall resistance
    at zero magnetic field and enriched the emergent quantum phenomena in materials
    with topological flat bands. '
  description_type: abstract
  lang: en

## Creator

- name: Zhengguang Lu
  role: author
- name: Tonghang Han
  role: author
- name: Yuxuan Yao
  role: author
- name: Zach Hadjri
  role: author
- name: Jixiang Yang
  role: author
- name: Junseok Seo
  role: author
- name: Lihan Shi
  role: author
- name: Shenyong Ye
  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: Long Ju
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Fractional quantum anomalous Hall effect (FQAHE)
  schema: not_defined
- subject: Rhombohedral graphene/hBN moiré superlattice
  schema: not_defined
- subject: Topological flat band
  schema: not_defined

## Rights

- description: 'This version of the article has been accepted for publication, after
    peer review (when applicable) and is subject to Springer Nature’s AM terms of
    use, but is not the Version of Record and does not reflect post-acceptance improvements,
    or any corrections. The Version of Record is available online at: https://doi.org/10.1038/s41586-024-08470-1.'
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2025-01-22
end_date: 2025-07-22

## Journal

- title: Nature
  issn: '00280836'
  volume: '637'
  issue: '8048'
  start_page: 1090
  end_page: 1095

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## Specimen



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## Fileset

- id: e29e58ae-f947-41ec-b0eb-06f16223a711
  filename: 2025A00296G_485078_2_merged_1732807795.pdf
  content_type: application/pdf
  size: 6542227
  md5: d6b6236318e18e101094fb26c17bfdff

## Thumbnail

fileset_id: e29e58ae-f947-41ec-b0eb-06f16223a711
filename: 2025A00296G_485078_2_merged_1732807795.pdf