# Raman scattering excitation in monolayers of semiconducting transition metal dichalcogenides

https://mdr.nims.go.jp/datasets/7b2b69ae-d222-4c9e-9c1c-6fed97dc8b62

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## Id

7b2b69ae-d222-4c9e-9c1c-6fed97dc8b62

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-18T05:19:03.621206Z

## Updated at

2025-02-23T13:47:59.502497Z

## Published at

2025-02-23T13:47:59.569538Z

## Doi



## First published url

https://doi.org/10.1038/s41699-023-00438-5

## Date published

2024-01-10

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Raman scattering excitation in monolayers of semiconducting transition metal
    dichalcogenides
  title_type: original
  lang: en

## Description

- description: Raman scattering excitation (RSE) is an experimental technique in which
    the spectrum is made up by sweeping the excitation energy when the detection energy
    is fixed in resonance with an excitonic transition. We study the low-temperature
    (T=5 K) RSE spectra measured on four high quality monolayers (ML) of semiconducting
    transition metal dichalcogenides (S-TMDs), i.e. MoS2, MoSe2, WS2, and WSe2, encapsulated
    in hexagonal BN. The outgoing resonant conditions of Raman scattering reveal an
    extraordinary intensity enhancement of the phonon modes, which results in extremely
    rich RSE spectra. The obtained spectra are composed not only of Raman-active peaks,
    i.e. in-plane E′ and out-of-plane A′1, but the appearance of 1st, 2nd, and higher-order
    phonon modes is recognised. We find that the intensity profiles of the A′1 modes
    in the investigated MLs resemble the emissions due to neutral excitons measured
    in the corresponding PL spectra for the outgoing type of resonant Raman conditions.
    Furthermore, for the WSe2 ML, the A′1 mode was observed in resonance of the incoming
    light with the neutral exciton line. The strength of the exciton-phonon coupling
    (EPC) in S-TMD MLs strongly depends on the type of their ground excitonic state,
    i.e. bright or dark, resulting in different shapes of the RSE spectra. Our results
    demonstrate that RSE spectroscopy is a powerful technique for studying EPC in
    S-TMD MLs.
  description_type: abstract
  lang: und

## Creator

- name: M. Zinkiewicz
  role: author
- name: M. Grzeszczyk
  role: author
- name: T. Kazimierczuk
  role: author
- name: M. Bartos
  role: author
- name: K. Nogajewski
  role: author
- name: W. Pacuski
  role: author
- name: K. Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: T. Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: A. Wysmołek
  role: author
- name: P. Kossacki
  role: author
- name: M. Potemski
  role: author
- name: A. Babiński
  role: author
- name: M. R. Molas
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Raman scattering excitation
  schema: not_defined
- subject: semiconducting TMDs
  schema: not_defined
- subject: exciton-phonon coupling
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: npj 2D Materials and Applications
  issn: '23977132'
  volume: '8'
  issue: '1'
  article_number: '2'

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## Funding

- identifier: 2018/31/B/ST3/02111
  funder_name: Narodowe Centrum Nauki
- identifier: 2017/27/B/ST3/00205
  funder_name: Narodowe Centrum Nauki
- identifier: 2017/27/B/ST3/00205
  funder_name: Narodowe Centrum Nauki
- identifier: 23-05578S
  funder_name: Grantová Agentura České Republiky
- identifier: 2021/41/B/ST3/04183
  funder_name: Narodowe Centrum Nauki
- identifier: 23H02052
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 23H02052
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: Graphene Flagship Project
  funder_name: European Commission
- identifier: MAB/2018/9
  funder_name: Fundacja na rzecz Nauki Polskiej
- identifier: 2017/27/B/ST3/00205
  funder_name: Narodowe Centrum Nauki

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## Fileset

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filename: s41699-023-00438-5.pdf