# Gate-modulated reflectance spectroscopy for detecting excitonic states in two-dimensional semiconductors

https://mdr.nims.go.jp/datasets/08dce13c-a831-4154-917f-471adb87c913

## Files

- [apl2023.pdf](https://mdr.nims.go.jp/filesets/d5d976c7-6210-4bc5-92b5-9216eedf075b/download) ([Detail](https://mdr.nims.go.jp/filesets/d5d976c7-6210-4bc5-92b5-9216eedf075b.md))

## Id

08dce13c-a831-4154-917f-471adb87c913

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-01-07T09:17:44.526874Z

## Updated at

2024-01-12T04:22:21.002633Z

## Published at

2024-01-12T07:30:09.246116Z

## Doi

https://doi.org/10.48505/nims.4328

## First published url

https://doi.org/10.1063/5.0159245

## Date published

2023-08-07

## Recorded date published

2023-8-7

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Gate-modulated reflectance spectroscopy for detecting excitonic states in
    two-dimensional semiconductors
  title_type: original
  lang: en

## Description

- description: We have developed a microspectroscopy technique for measuring gate-modulated
    reflectance to probe excitonic states in two-dimensional transition metal dichalcogenides.
    Through the use of gate-modulated spectroscopy, we were able to detect excited
    states of excitons and trions, which would typically have weak optical signals
    in traditional reflectance spectroscopy. Using a transfer matrix method for spectral
    analysis, the binding energy of trion 2s was determined to be 26 meV. As observing
    the Rydberg series of excitonic states provides fruitful information on the strong
    Coulomb interaction in two-dimensional systems, gate-modulated spectroscopy can
    be a versatile tool for understanding underlying many-body physics as well as
    designing next-generation quantum optoelectronics based on two-dimensional materials.
  description_type: abstract
  lang: eng

## Creator

- name: Mengsong Xue
  role: author
  organization: National Institute for Materials Science
- 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: Ryo Kitaura
  role: author
  orcid: https://orcid.org/0000-0001-8108-109X
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: AIP Publishing

## Managing organization



## Keyword

- subject: excitons
  schema: not_defined
- subject: 2D materials
  schema: not_defined
- subject: modulation spectroscopy
  schema: not_defined

## Rights

- description: This article may be downloaded for personal use only. Any other use
    requires prior permission of the author and AIP Publishing. This article appeared
    in Applied Physics Letters 123, 063101 (2023) and may be found at https://doi.org/10.1063/5.0159245.
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: APPLIED PHYSICS LETTERS
  issn: '00036951'
  volume: '123'
  issue: '6'
  start_page: 63101
  end_page: 63101

## Conference



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## Instrument



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## Measurement method



## Specimen



## Chemical composition



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## Fileset

- id: d5d976c7-6210-4bc5-92b5-9216eedf075b
  filename: apl2023.pdf
  content_type: application/pdf
  size: 797916
  md5: 57ba0a563c1ded57b1f720ce7bc18df5

## Thumbnail

fileset_id: d5d976c7-6210-4bc5-92b5-9216eedf075b
filename: apl2023.pdf