# Valley Isospin Controlled Fractional Quantum Hall States in Bilayer Graphene

https://mdr.nims.go.jp/datasets/8e115ba4-887f-47bf-ac72-db3b83ed4758

## File

- [PhysRevX.12.031019.pdf](https://mdr.nims.go.jp/filesets/a0f84040-058d-4f7e-a0fa-c0a0cf6ac278/download) ([Detail](https://mdr.nims.go.jp/filesets/a0f84040-058d-4f7e-a0fa-c0a0cf6ac278.md))

## Id

8e115ba4-887f-47bf-ac72-db3b83ed4758

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-27T06:55:13.399380Z

## Updated at

2025-02-28T03:30:33.180267Z

## Published at

2025-02-28T03:30:33.275652Z

## Doi



## First published url

https://doi.org/10.1103/physrevx.12.031019

## Date published

2022-07-28

## Recorded date published

2022-7

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Valley Isospin Controlled Fractional Quantum Hall States in Bilayer Graphene
  title_type: original
  lang: en

## Description

- description: Electron spin and pseudospin degrees of freedom play a critical role
    in many-body phenomena through exchange interactions, the understanding and control
    of which enable the construction of states with complex topological orders and
    exotic excitations. In this work, we demonstrate fine control of the valley isospin
    in high-quality bilayer graphene devices and its profound impact in realizing
    fractional quantum Hall effect with different ground state orders. We present
    evidence for a new even-denominator fractional quantum Hall state in bilayer graphene,
    its spontaneous valley polarization in the limit of zero valley Zeeman energy,
    and the breaking of particle-hole symmetry. These observations support the Moore-Read
    anti-Pfaffian order. Our experiments establish valley isospin in bilayer graphene
    to be a powerful experimental knob and open the door to engineering non-Abelian
    states and quantum information processes in a quantum Hall platform.
  description_type: abstract
  lang: und

## Creator

- name: Ke Huang
  role: author
- name: Hailong Fu
  role: author
- name: Danielle Reifsnyder Hickey
  role: author
- name: Nasim Alem
  role: author
- name: Xi Lin
  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: Jun Zhu
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Landau levels
  schema: not_defined
- subject: Bernal-stacked bilayer graphene
  schema: not_defined
- subject: fractional quantum Hall state
  schema: not_defined

## Rights

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

## Other identifier(s)



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## Journal

- title: Physical Review X
  issn: '21603308'
  volume: '12'
  issue: '3'
  article_number: '031019'

## Conference



## Related item



## Funding

- identifier: NSF-DMR-1904986
  funder_name: National Science Foundation
- identifier: NSF-DMR-1708972
  funder_name: National Science Foundation
- identifier: NSF-DMR-1644779
  funder_name: National Science Foundation
- identifier: DMR-1654107
  funder_name: National Science Foundation
- identifier: DMR-1539916
  funder_name: National Science Foundation
- identifier: DMR-2039351
  funder_name: National Science Foundation
- identifier: KA2018-98553
  funder_name: Pittsburgh Foundation
- identifier: JQ18002
  funder_name: Natural Science Foundation of Beijing Municipality
- identifier: 2017YFA0303301
  funder_name: National Key Research and Development Program of China
- identifier: 19H05790
  funder_name: Japan Society for the Promotion of Science
- identifier: 20H00354
  funder_name: Japan Society for the Promotion of Science
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- funder_name: National High Magnetic Field Laboratory
- funder_name: Penn State Eberly Research Fellowship

## Instrument



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## Specimen



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## Fileset

- id: a0f84040-058d-4f7e-a0fa-c0a0cf6ac278
  filename: PhysRevX.12.031019.pdf
  content_type: application/pdf
  size: 4035901
  md5: 487131408816424c5f3a7d413c09c6dd

## Thumbnail

fileset_id: a0f84040-058d-4f7e-a0fa-c0a0cf6ac278
filename: PhysRevX.12.031019.pdf