# High-temperature Brown-Zak oscillations in graphene/hBN moiré field effect transistor fabricated using molecular beam epitaxy

https://mdr.nims.go.jp/datasets/8be49dbf-34e1-48d3-b339-52d5d1eb64bf

## File

- [s43246-024-00633-x.pdf](https://mdr.nims.go.jp/filesets/cfa6bff4-3cf0-4c36-bda9-47c2be08fda8/download) ([Detail](https://mdr.nims.go.jp/filesets/cfa6bff4-3cf0-4c36-bda9-47c2be08fda8.md))

## Id

8be49dbf-34e1-48d3-b339-52d5d1eb64bf

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-05T04:21:27.237871Z

## Updated at

2025-02-05T07:30:23.667538Z

## Published at

2025-02-05T07:30:23.772109Z

## Doi



## First published url

https://doi.org/10.1038/s43246-024-00633-x

## Date published

2024-09-14

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: High-temperature Brown-Zak oscillations in graphene/hBN moiré field effect
    transistor fabricated using molecular beam epitaxy
  title_type: original
  lang: en

## Description

- description: Graphene placed on hexagonal boron nitride (hBN) has received significant
    interest due to its excellent electrical performance and physics phenomena, such
    as superlattice Dirac points. Direct molecular beam epitaxy growth of graphene
    on hBN offers an alternative fabrication route for hBN/graphene devices. Here,
    we investigate the electronic transport of moiré field effect transistors (FETs)
    in which the conducting channel is monolayer graphene grown on hexagonal boron
    nitride by high temperature molecular beam epitaxy (HT-MBE). Alignment between
    hBN and HT-MBE graphene crystal lattices gives rise to a moiré-fringed hexagonal
    superlattice pattern. Its electronic band structure takes the form of a “Hofstadter
    butterfly”. When a strong magnetic field B is applied perpendicular to the graphene
    layer, the electrical conductance displays magneto-oscillations, periodic in B−1,
    over a wide range of gate voltages and temperatures up to 350 K. We attribute
    this behaviour to the quantisation of electronic charge and magnetic flux within
    each unit cell of the superlattice, which gives rise to so-called Brown-Zak oscillations,
    previously reported only in high-mobility exfoliated graphene. Thus, this HT-MBE
    graphene/hBN heterostructure provides a platform for observation of room temperature
    quantum effects and device applications.
  description_type: abstract
  lang: und

## Creator

- name: Oleg Makarovsky
  role: author
  orcid: https://orcid.org/0000-0002-8625-5084
- name: Richard J. A. Hill
  role: author
- name: Tin S. Cheng
  role: author
- name: Alex Summerfield
  role: author
  orcid: https://orcid.org/0000-0001-6091-3969
- name: Takeshi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- 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: Christopher J. Mellor
  role: author
  orcid: https://orcid.org/0000-0001-5987-7876
- name: Amalia Patanè
  role: author
  orcid: https://orcid.org/0000-0003-3015-9496
- name: Laurence Eaves
  role: author
  orcid: https://orcid.org/0000-0002-5334-0987
- name: Sergei V. Novikov
  role: author
  orcid: https://orcid.org/0000-0002-3725-2565
- name: Peter H. Beton
  role: author
  orcid: https://orcid.org/0000-0002-2120-8033

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Moiré field effect
  schema: not_defined
- subject: graphene
  schema: not_defined
- subject: molecular beam epitaxy
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Communications Materials
  issn: '26624443'
  volume: '5'
  issue: '1'
  article_number: '189'

## Conference



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## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Computational method



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## Fileset

- id: cfa6bff4-3cf0-4c36-bda9-47c2be08fda8
  filename: s43246-024-00633-x.pdf
  content_type: application/pdf
  size: 1779630
  md5: 1e59f48d8c58d1016d92228e1740f182

## Thumbnail

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filename: s43246-024-00633-x.pdf