# Phonon-mediated room-temperature quantum Hall transport in graphene

https://mdr.nims.go.jp/datasets/94f40125-1c0d-4bb8-b2f6-7641a2a6633a

## File

- [s41467-023-35986-3.pdf](https://mdr.nims.go.jp/filesets/0c311ec1-35cb-43f2-bd27-2da247de9641/download) ([Detail](https://mdr.nims.go.jp/filesets/0c311ec1-35cb-43f2-bd27-2da247de9641.md))

## Id

94f40125-1c0d-4bb8-b2f6-7641a2a6633a

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-14T08:09:11.519326Z

## Updated at

2025-02-15T03:31:14.798094Z

## Published at

2025-02-15T03:31:14.919217Z

## Doi



## First published url

https://doi.org/10.1038/s41467-023-35986-3

## Date published

2023-01-19

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Phonon-mediated room-temperature quantum Hall transport in graphene
  title_type: original
  lang: en

## Description

- description: The quantum Hall (QH) effect in two-dimensional electron systems (2DESs)
    is conventionally observed at liquid-helium temperatures, where lattice vibrations
    are strongly suppressed and bulk carrier scattering is dominated by disorder.
    However, due to large Landau level (LL) separation (~2000 K at B = 30 T), graphene
    can support the QH effect up to room temperature (RT), concomitant with a non-negligible
    population of acoustic phonons with a wave-vector commensurate to the inverse
    electronic magnetic length. Here, we demonstrate that graphene encapsulated in
    hexagonal boron nitride (hBN) realizes a novel transport mechanism, where dissipation
    in the QH regime is governed predominantly by electron-phonon scattering. Investigating
    thermally-activated transport at filling factor 2 up to RT in an ensemble of back-gated
    devices, we show that the high B-field behaviour correlates with their zero B-field
    transport mobility. By this means, we extend the well-accepted notion of phonon-limited
    resistivity in ultra-clean graphene to a hitherto unexplored high-field realm.
  description_type: abstract
  lang: und

## Creator

- name: Daniel Vaquero
  role: author
- name: Vito Clericò
  role: author
- name: Michael Schmitz
  role: author
- name: Juan Antonio Delgado-Notario
  role: author
- name: Adrian Martín-Ramos
  role: author
- name: Juan Salvador-Sánchez
  role: author
- name: Claudius S. A. Müller
  role: author
- name: Km Rubi
  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: Bernd Beschoten
  role: author
- name: Christoph Stampfer
  role: author
- name: Enrique Diez
  role: author
- name: Mikhail I. Katsnelson
  role: author
- name: Uli Zeitler
  role: author
- name: Steffen Wiedmann
  role: author
- name: Sergio Pezzini
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Quantum Hall effect
  schema: not_defined
- subject: graphene
  schema: not_defined
- subject: electron-phonon scattering
  schema: not_defined

## Rights

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

## Other identifier(s)



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## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '14'
  issue: '1'
  article_number: '318'

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## Fileset

- id: 0c311ec1-35cb-43f2-bd27-2da247de9641
  filename: s41467-023-35986-3.pdf
  content_type: application/pdf
  size: 1324479
  md5: 6f1e575bbe838e488e0f8978f443dcc1

## Thumbnail

fileset_id: 0c311ec1-35cb-43f2-bd27-2da247de9641
filename: s41467-023-35986-3.pdf