# 3D hydrogen-like screening effect on excitons in hBN-encapsulated monolayer transition metal dichalcogenides

https://mdr.nims.go.jp/datasets/7f2ee620-1630-4015-a24e-149c4672f9d2

## File

- [s41598-024-77625-x.pdf](https://mdr.nims.go.jp/filesets/2ef8e212-061f-4c51-8f18-006256d68520/download) ([Detail](https://mdr.nims.go.jp/filesets/2ef8e212-061f-4c51-8f18-006256d68520.md))

## Id

7f2ee620-1630-4015-a24e-149c4672f9d2

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-04T06:38:16.603583Z

## Updated at

2025-02-05T03:30:34.458263Z

## Published at

2025-02-05T03:30:34.573001Z

## Doi



## First published url

https://doi.org/10.1038/s41598-024-77625-x

## Date published

2024-11-08

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 3D hydrogen-like screening effect on excitons in hBN-encapsulated monolayer
    transition metal dichalcogenides
  title_type: original
  lang: en

## Description

- description: "Low dimensionality has non-trivial effects on Coulomb interaction.
    One attractive platform to investigate 2D-Coulomb interaction is the excitons
    in monolayer transition metal dichalcogenides (1L-TMDs). 1L-TMD excitons are known
    to have non-hydrogenic level structures. However, no empirical rule that universally
    describes exciton level structures in various 1L-TMD systems has been obtained
    from experiments. Here, we conducted sum frequency generation spectroscopies on
    four 1L-MX2 (M=Mo, W, X=S, Se) thin films encapsulated by hBN, and simultaneously
    observed s-series and p-series exciton levels. From the obtained energies, we
    extracted excitonic parameters, such as binding energies and average radii, with
    help of numerical calculations considering dielectric screening in 2D and band
    structure. We found a simple and non-trivial power-law scaling between obtained
    excitonic parameters. The power-law scaling is understood as an approximate form
    of the virial theorem which strictly holds for 3D hydrogen models. This result
    indicates that dielectric screening of hBN is the main factor that governs 1L-TMD
    exciton level structure.\r\n"
  description_type: abstract
  lang: und

## Creator

- name: S. Takahashi
  role: author
- name: S. Kusaba
  role: author
- name: K. Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
- name: T. Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
- name: K. Yanagi
  role: author
- name: K. Tanaka
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Excitons
  schema: not_defined
- subject: sum frequency generation spectroscopy
  schema: not_defined
- subject: dielectric screening
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Scientific Reports
  issn: '20452322'
  volume: '14'
  issue: '1'
  article_number: '27286'

## Conference



## Related item



## Funding

- identifier: JP17H06124
  funder_name: Japan Society for the Promotion of Science
- identifier: JP21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: JP20H02573
  funder_name: Japan Society for the Promotion of Science
- identifier: JPMJMI17F2
  funder_name: Japan Science and Technology Agency
- identifier: JPMJCR17I5
  funder_name: Japan Science and Technology Agency
- identifier: JPMXS0118067634
  funder_name: Ministry of Education, Culture, Sports, Science and Technology

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## Fileset

- id: 2ef8e212-061f-4c51-8f18-006256d68520
  filename: s41598-024-77625-x.pdf
  content_type: application/pdf
  size: 2610595
  md5: 94975584c151831bfdeb0298237ef666

## Thumbnail

fileset_id: 2ef8e212-061f-4c51-8f18-006256d68520
filename: s41598-024-77625-x.pdf