# Interplay of valley polarized dark trion and dark exciton-polaron in monolayer WSe2

https://mdr.nims.go.jp/datasets/cdba9004-c365-4215-8a2e-93c89941cd58

## File

- [s41467-023-41475-4.pdf](https://mdr.nims.go.jp/filesets/eb126b4d-fd50-4d9c-97b5-8b6e074e0657/download) ([Detail](https://mdr.nims.go.jp/filesets/eb126b4d-fd50-4d9c-97b5-8b6e074e0657.md))

## Id

cdba9004-c365-4215-8a2e-93c89941cd58

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-07T08:23:38.039004Z

## Updated at

2025-02-11T03:30:36.831355Z

## Published at

2025-02-11T03:30:36.962968Z

## Doi



## First published url

https://doi.org/10.1038/s41467-023-41475-4

## Date published

2023-09-13

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Interplay of valley polarized dark trion and dark exciton-polaron in monolayer
    WSe2
  title_type: original
  lang: en

## Description

- description: The interactions between charges and excitons involve complex many-body
    interactions at high densities. The exciton-polaron model has been adopted to
    understand the Fermi sea screening of charged excitons in monolayer transition
    metal dichalcogenides. The results provide good agreement with absorption measurements,
    which are dominated by dilute bright exciton responses. Here we investigate the
    Fermi sea dressing of spin-forbidden dark excitons in monolayer WSe2. With a Zeeman
    field, the valley-polarized dark excitons show distinct p-doping dependence in
    photoluminescence when the carriers reach a critical density. This density can
    be interpreted as the onset of strongly modified Fermi sea interactions and shifts
    with increasing exciton density. Through valley-selective excitation and dynamics
    measurements, we also infer an intervalley coupling between the dark trions and
    exciton-polarons mediated by the many-body interactions. Our results reveal the
    evolution of Fermi sea screening with increasing exciton density and the impacts
    of polaron-polaron interactions, which lay the foundation for understanding electronic
    correlations and many-body interactions in 2D systems.
  description_type: abstract
  lang: und

## Creator

- name: Xin Cong
  role: author
- name: Parisa Ali Mohammadi
  role: author
- name: Mingyang Zheng
  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: Daniel Rhodes
  role: author
- name: Xiao-Xiao Zhang
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Exciton-polaron model
  schema: not_defined
- subject: Fermi sea screening
  schema: not_defined
- subject: monolayer transition metal dichalcogenides
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '14'
  issue: '1'
  article_number: '5657'

## Conference



## Related item



## Funding

- identifier: DMR- 2142703
  funder_name: National Science Foundation

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Fileset

- id: eb126b4d-fd50-4d9c-97b5-8b6e074e0657
  filename: s41467-023-41475-4.pdf
  content_type: application/pdf
  size: 1860713
  md5: 1463e7420983e2be6803211ae8e8201e

## Thumbnail

fileset_id: eb126b4d-fd50-4d9c-97b5-8b6e074e0657
filename: s41467-023-41475-4.pdf