# Nontrivial quantum oscillation geometric phase shift in a trivial band

https://mdr.nims.go.jp/datasets/b29e3ab4-577d-4bef-91b9-e3fece6447ec

## File

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## Id

b29e3ab4-577d-4bef-91b9-e3fece6447ec

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-20T07:03:21.556965Z

## Updated at

2025-02-23T13:51:10.548961Z

## Published at

2025-02-23T13:51:10.617939Z

## Doi



## First published url

https://doi.org/10.1126/sciadv.aax6550

## Date published

2019-10-11

## Recorded date published

2019-10-11

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Nontrivial quantum oscillation geometric phase shift in a trivial band
  title_type: original
  lang: en

## Description

- description: Quantum oscillations provide a striking visualization of the Fermi
    surface of metals including associated geometrical phases, such as Berry’s phase,
    that play a central role in topological quantum materials. We report on magneto-transport
    measure- ments in ABA-trilayer graphene, the band structure of which is comprised
    of a weakly gapped monolayer graphene (MLG)-like band, nested within a trivial
    bilayer graphene (BLG)-like band. Detailed field and density maps, for a wide
    range of device param- eters, reveal Shubnikov-de Hass (SdH) oscillations of the
    BLG-like band shifted by a phase that sharply departs from the expected 2π Berry’s
    phase. A careful analysis reveals that, surprisingly, the anomalous shift is non-trivial
    and is inherited from the non-trivial Berry’s phase of the MLG-like band due to
    strong filling-enforced con- straints between the BLG-like and MLG-like Fermi
    surfaces. Given that many topo- logical materials contain multiple bands, our
    work indicates how additional bands, which are thought to obscure the analysis,
    can actually be exploited to tease out the subtle effects of Berry’s phase.
  description_type: abstract
  lang: und

## Creator

- name: Biswajit Datta
  role: author
- name: Pratap Chandra Adak
  role: author
- name: Li-kun Shi
  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: Justin C. W. Song
  role: author
- name: Mandar M. Deshmukh
  role: author

## Contact agent



## Publisher

organization: American Association for the Advancement of Science (AAAS)

## Managing organization



## Keyword

- subject: Quantum oscillations
  schema: not_defined
- subject: trilayer graphene
  schema: not_defined
- subject: Berry's phase
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Science Advances
  issn: '23752548'
  volume: '5'
  issue: '10'

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## Measurement method



## Specimen



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## Fileset

- id: d7d8f732-4ebc-4649-be2b-f47e4f789b9c
  filename: eaax6550.full.pdf
  content_type: application/pdf
  size: 1815384
  md5: 9528ddbcd62bdae1ef63d88478f984da

## Thumbnail

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filename: eaax6550.full.pdf