# Probing electron-hole Coulomb correlations in the exciton landscape of a twisted semiconductor heterostructure

https://mdr.nims.go.jp/datasets/f2c078c4-90f8-47f1-8572-377b64af403b

## Files

- [sciadv.adi1323.pdf](https://mdr.nims.go.jp/filesets/df6fdc95-fd97-41ad-8ce1-e2ff7a1eae78/download) ([Detail](https://mdr.nims.go.jp/filesets/df6fdc95-fd97-41ad-8ce1-e2ff7a1eae78.md))

## Id

f2c078c4-90f8-47f1-8572-377b64af403b

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-02-14T05:21:55.095255Z

## Updated at

2026-02-16T07:30:07.049258Z

## Published at

2026-02-16T04:57:34.802009Z

## Doi



## First published url

https://doi.org/10.1126/sciadv.adi1323

## Date published

2024-02-09

## Recorded date published

2024-2-9

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Probing electron-hole Coulomb correlations in the exciton landscape of a
    twisted semiconductor heterostructure
  title_type: original
  lang: en

## Description

- description: Low-dimensional confinement and reduced Coulomb screening make artificial
    stacks of transition metal dichalcogenides (TMDs) a prosperous material class
    for realizing new correlated states of matter. Fundamental to these many-body
    phenomena is the correlated interaction of Coulomb-bound electron-hole pairs,
    i.e., excitons. However, the correlated interactions, in particular with respect
    to momentum- and spin- forbidden optically dark excitons, are still poorly understood.
    Here we show that femtosecond momentum microscopy enables direct access to correlation
    effects of bright and dark excitons. For the model system of twisted WSe2/MoS2,
    we show that the ultrafast transfer of the exciton’s hole across the type-II band-
    aligned heterointerface leads to an energy upshift of the single-particle photoelectrons
    being emitted from the two-particle exciton. This is surprising at first, since
    energy relaxation processes typically lead to an energetic downshift of the spectroscopic
    signature. However, the spectral function that is measured in pho- toemission
    is not only sensitive to the single-particle electron that is eventually detected,
    but also depends on the properties of the correlated excitonic quasiparticle before
    the photoemission break-up process.
  description_type: abstract
  lang: und

## Creator

- name: Jan Philipp Bange
  role: author
- name: David Schmitt
  role: author
- name: Wiebke Bennecke
  role: author
- name: Giuseppe Meneghini
  role: author
- name: AbdulAziz AlMutairi
  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: Daniel Steil
  role: author
- name: Sabine Steil
  role: author
- name: R. Thomas Weitz
  role: author
- name: G. S. Matthijs Jansen
  role: author
- name: Stephan Hofmann
  role: author
- name: Samuel Brem
  role: author
- name: Ermin Malic
  role: author
- name: Marcel Reutzel
  role: author
- name: Stefan Mathias
  role: author

## Contact agent



## Publisher

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

## Managing organization



## Keyword

- subject: 'electron-hole correlation
    '
  schema: not_defined
- subject: 'twisted semiconductor
    '
  schema: not_defined
- subject: 'time-resolved photoelectron spectroscopy
    '
  schema: not_defined

## Rights

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

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## Data origin



## Embargo



## Journal

- title: Science Advances
  issn: '23752548'
  volume: '10'
  issue: '6'
  article_number: eadi1323

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## Fileset

- id: df6fdc95-fd97-41ad-8ce1-e2ff7a1eae78
  filename: sciadv.adi1323.pdf
  content_type: application/pdf
  size: 827478
  md5: 7770b4530a390770ce3fc4345b3d39f8

## Thumbnail

fileset_id: df6fdc95-fd97-41ad-8ce1-e2ff7a1eae78
filename: sciadv.adi1323.pdf