# Exciton-Exciton Interactions in Van der Waals Heterobilayers

https://mdr.nims.go.jp/datasets/766185b0-9246-4cb0-b305-bdc8f9ebbaaf

## File

- [PhysRevX.14.031025.pdf](https://mdr.nims.go.jp/filesets/bb3327da-2fc7-40c6-b9bd-321152081503/download) ([Detail](https://mdr.nims.go.jp/filesets/bb3327da-2fc7-40c6-b9bd-321152081503.md))

## Id

766185b0-9246-4cb0-b305-bdc8f9ebbaaf

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-05T02:25:19.069355Z

## Updated at

2025-02-05T07:30:10.421580Z

## Published at

2025-02-05T07:30:11.409811Z

## Doi



## First published url

https://doi.org/10.1103/physrevx.14.031025

## Date published

2024-08-14

## Recorded date published

2024-8

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Exciton-Exciton Interactions in Van der Waals Heterobilayers
  title_type: original
  lang: en

## Description

- description: "Exciton-exciton interactions are key to understanding non-linear optical
    and transport phenomena in van der Waals heterobilayers, which emerged as versatile
    platforms to study correlated electronic states. We present a combined theory-experiment
    study of excitonic many-body effects based on first-principle band structures
    and Coulomb interaction matrix elements. Key to our approach is the explicit treatment
    of the fermionic substructure of excitons and dynamical screening effects for
    density-induced energy renormalization and dissipation. We demonstrate that broadly
    assumed dipolar blue shifts are almost perfectly compensated by many-body effects,
    mainly by screening- induced self-energy corrections. Moreover, we identify a
    crossover between attractive and repulsive behavior at elevated exciton densities.
    Theoretical findings are supported by density-dependent observations of spectrally-narrow
    interlayer excitons in atomically-reconstructed, hBN-encapsulated MoSe2/WSe2 heterobilayers.
    Both theory and experiment show energy renormalization on a scale of a few meV
    even for high injection densities in the vicinity of the Mott transition. These
    results revise the established picture of dipolar repulsion dominating exciton-exciton
    interactions in van der Waals heterostructures and open up opportunities for their
    external design.\r\n"
  description_type: abstract
  lang: und

## Creator

- name: Alexander Steinhoff
  role: author
  orcid: https://orcid.org/0000-0002-8134-4344
- name: Edith Wietek
  role: author
  orcid: https://orcid.org/0000-0001-6681-9260
- name: Matthias Florian
  role: author
- name: Tommy Schulz
  role: author
  orcid: https://orcid.org/0009-0001-9965-3495
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
- name: Shen Zhao
  role: author
  orcid: https://orcid.org/0000-0002-7342-7887
- name: Alexander Högele
  role: author
  orcid: https://orcid.org/0000-0002-0178-9117
- name: Frank Jahnke
  role: author
- name: Alexey Chernikov
  role: author
  orcid: https://orcid.org/0000-0002-9213-2777

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Exciton-exciton interactions
  schema: not_defined
- subject: van der Waals
  schema: not_defined
- subject: many-body effects
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review X
  issn: '21603308'
  volume: '14'
  issue: '3'
  article_number: '031025'

## Conference



## Related item



## Funding

- identifier: 20H00354
  funder_name: Japan Society for the Promotion of Science
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: 23H02052
  funder_name: Japan Society for the Promotion of Science
- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: '772195'
  funder_name: H2020 European Research Council
- identifier: '287022282'
  funder_name: Emmy Noether Initiative
- identifier: '314695032'
  funder_name: Emmy Noether Initiative
- identifier: '390858490'
  funder_name: Würzburg-Dresden Cluster of Excellence on Complexity and Topology in
    Quantum Matter
- funder_name: World Premier International Research Center Initiative
- identifier: '443405595'
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: '390814868'
  funder_name: Munich Center for Quantum Science and Technology
- funder_name: Alexander von Humboldt-Stiftung

## Instrument



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## Measurement method



## Specimen



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## Computational method



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## Fileset

- id: bb3327da-2fc7-40c6-b9bd-321152081503
  filename: PhysRevX.14.031025.pdf
  content_type: application/pdf
  size: 1849153
  md5: 29c228b32c4364874584e13cc5ca0895

## Thumbnail

fileset_id: bb3327da-2fc7-40c6-b9bd-321152081503
filename: PhysRevX.14.031025.pdf