# Conduction Band Replicas in a 2D Moiré Semiconductor Heterobilayer

https://mdr.nims.go.jp/datasets/935e8ef4-0f0d-45a6-ac5d-e498d67f6ca5

## File

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## Id

935e8ef4-0f0d-45a6-ac5d-e498d67f6ca5

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-07-28T00:24:18.553832Z

## Updated at

2025-07-28T03:30:20.380341Z

## Published at

2025-07-28T03:17:08.126526Z

## Doi



## First published url

https://doi.org/10.1021/acs.nanolett.3c04866

## Date published

2024-05-01

## Recorded date published

2024-5-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Conduction Band Replicas in a 2D Moiré Semiconductor Heterobilayer
  title_type: original
  lang: en

## Description

- description: Stacking monolayer semiconductors creates moiré patterns, leading to
    correlated and topological electronic phenomena, but measurements of the electronic
    structure underpinning these phenomena are scarce. Here, we investigate the properties
    of the conduction band in moiré heterobilayers of WS<sub>2</sub>/WSe<sub>2</sub>
    using submicrometer angle-resolved photoemission spectroscopy with electrostatic
    gating. We find that at all twist angles the conduction band edge is the K-point
    valley of the WS<sub>2</sub>, with a band gap of 1.58 ± 0.03 eV. From the resolved
    conduction band dispersion, we deduce an effective mass of 0.15 ± 0.02 m<sub>e</sub>.
    Additionally, we observe replicas of the conduction band displaced by reciprocal
    lattice vectors of the moiré superlattice. We argue that the replicas result from
    the moiré potential modifying the conduction band states rather than final-state
    diffraction. Interestingly, the replicas display an intensity pattern with reduced
    3-fold symmetry, which we show implicates the pseudo vector potential associated
    with in-plane strain in moiré band formation.
  description_type: abstract
  lang: en

## Creator

- name: Abigail J. Graham
  role: author
- name: Heonjoon Park
  role: author
- name: Paul V. Nguyen
  role: author
- name: James Nunn
  role: author
- name: Viktor Kandyba
  role: author
- name: Mattia Cattelan
  role: author
- name: Alessio Giampietri
  role: author
- name: Alexei Barinov
  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: Anton Andreev
  role: author
- name: Mark Rudner
  role: author
- name: Xiaodong Xu
  role: author
- name: Neil R. Wilson
  role: author
- name: David H. Cobden
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Two-Dimensional Materials
  schema: not_defined
- subject: Two-Dimensional Heterostructures
  schema: not_defined
- subject: Two-Dimensional Semiconductors
  schema: not_defined
- subject: Angle-Resolved Photoemission Spectroscopy
  schema: not_defined

## Rights

- description: This document is the Accepted Manuscript version of a Published Work
    that appeared in final form in Nano Letters, copyright © 2024 American Chemical
    Society after peer review and technical editing by the publisher. To access the
    final edited and published work see https://doi.org/10.1021/acs.nanolett.3c04866.
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-04-17
end_date: 2025-05-17

## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '24'
  issue: '17'
  start_page: 5117
  end_page: 5124

## Conference



## Related item



## Funding

- identifier: DE-SC0018171
  funder_name: Energy Frontier Research Centers
- identifier: DE-SC0019443
  funder_name: Energy Frontier Research Centers
- identifier: EP/P01139X/1
  funder_name: Engineering and Physical Sciences Research Council
- identifier: EP/T027207/1
  funder_name: Engineering and Physical Sciences Research Council
- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: 20H00354
  funder_name: Japan Society for the Promotion of Science
- identifier: 23H02052
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Fileset

- id: 431e094d-9f66-4054-b793-6b79f4303a58
  filename: 2024A00491G_Cobden Nano Lett.pdf
  content_type: application/pdf
  size: 5276981
  md5: abe51e279038fa5d9dcdbda005b6b22f
- id: 499ec7b1-5b93-4878-be77-99e5bc6f267b
  filename: 2024A00491G_Cobden Nano Lett SI.pdf
  content_type: application/pdf
  size: 1514923
  md5: 4088f5ae5f0f3ab82594aa2de61659cc

## Thumbnail

fileset_id: 431e094d-9f66-4054-b793-6b79f4303a58
filename: 2024A00491G_Cobden Nano Lett.pdf