# Optical Sensing of Fractional Quantum Hall Effect in Graphene

https://mdr.nims.go.jp/datasets/e47daf73-0a92-427a-8101-d57ab387733f

## File

- [acs.nanolett.2c02000.pdf](https://mdr.nims.go.jp/filesets/d0b57f19-839b-414f-ae46-e288c7b8b5c9/download) ([Detail](https://mdr.nims.go.jp/filesets/d0b57f19-839b-414f-ae46-e288c7b8b5c9.md))

## Id

e47daf73-0a92-427a-8101-d57ab387733f

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-20T08:01:32.922401Z

## Updated at

2025-02-23T13:51:13.665998Z

## Published at

2025-02-23T13:51:13.755836Z

## Doi



## First published url

https://doi.org/10.1021/acs.nanolett.2c02000

## Date published

2022-09-28

## Recorded date published

2022-9-28

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Optical Sensing of Fractional Quantum Hall Effect in Graphene
  title_type: original
  lang: en

## Description

- description: Graphene and its van der Waals (vdW) heterostructures provide a unique
    and versatile playground for explorations of strongly correlated electronic phases,
    ranging from unconventional fractional Quantum Hall states (FQH) in a monolayer
    system to a plethora of superconducting and insulating states in twisted bilayers.
    However, the access to those fascinating phases has been thus far entirely restricted
    to transport techniques, due to the lack of a robust energy bandgap that makes
    graphene hard to access optically. Here we demonstrate an all-optical, non-invasive
    spectroscopic tool for probing electronic correlations in graphene using excited
    Rydberg excitons in an adjacent transition metal dichalcogenide monolayer. Due
    to their large Bohr radii, Rydberg states are highly susceptible to the compressibility
    of graphene electrons, allowing us to detect the formation of odd-denominator
    FQH states at high magnetic fields. Owing to its sub-micron spatial resolution,
    the technique we demonstrate circumvents spatial inhomogeneities in vdW structures,
    and paves the way for optical studies of correlated states in twisted bilayer
    graphene and other optically inactive atomically-thin materials.
  description_type: abstract
  lang: und

## Creator

- name: Alexander Popert
  role: author
- name: Yuya Shimazaki
  role: author
- name: Martin Kroner
  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: Ataç Imamoğlu
  role: author
- name: Tomasz Smoleński
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Graphene
  schema: not_defined
- subject: fractional quantum Hall
  schema: not_defined
- subject: Rydberg excitons
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '22'
  issue: '18'
  start_page: 7363
  end_page: 7369

## Conference



## Related item



## Funding

- identifier: JPMXP0112101001
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: 200021-204076
  funder_name: Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen
    Forschung
- identifier: 51NF40-185902
  funder_name: Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen
    Forschung
- identifier: 19H05790
  funder_name: Japan Society for the Promotion of Science
- identifier: JP20H00354
  funder_name: Japan Society for the Promotion of Science

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## Fileset

- id: d0b57f19-839b-414f-ae46-e288c7b8b5c9
  filename: acs.nanolett.2c02000.pdf
  content_type: application/pdf
  size: 6972653
  md5: b90c085f3e961ca71fcafbc3f9329b14

## Thumbnail

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filename: acs.nanolett.2c02000.pdf