# Anomalous conductance quantization of a one-dimensional channel in monolayer WSe2

https://mdr.nims.go.jp/datasets/6c4cd9f5-0207-4824-8588-31306be8bb4d

## File

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## Id

6c4cd9f5-0207-4824-8588-31306be8bb4d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-18T04:47:11.941179Z

## Updated at

2025-02-23T13:47:42.909393Z

## Published at

2025-02-23T13:47:42.980935Z

## Doi



## First published url

https://doi.org/10.1038/s41699-023-00407-y

## Date published

2023-07-15

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Anomalous conductance quantization of a one-dimensional channel in monolayer
    WSe2
  title_type: original
  lang: en

## Description

- description: We have investigated charge tunable devices based on WSe2 and WS2 monolayers
    encapsulated in hexag- onal boron nitride. In addition to the well-known radiative
    recombination of neutral and charged excitons, stationary photoluminescence measurements
    highlight a weaker-intensity optical transition that appears when the monolayer
    is electrostatically doped with electrons. We have carried out a detailed characterization
    of this photoluminescence line based on its doping dependence, its variation as
    a function of the optical excitation power, its polarization characteristics,
    and its g factor measured under longitudinal magnetic field. We interpret this
    luminescence peak as an impurity-assisted radiative recombination of the intervalley
    negatively charged exciton (triplet trion). In addition to the standard direct
    recombination, the triplet trion has a second recom- bination channel triggered
    by elastic scattering off the short-range impurity potential. The energy difference
    between the emitted photons from these two possible recombination processes of
    the same triplet trion is simply the single-particle conduction band spin-orbit
    splitting Dc . We measure Dc = 12 ± 0.5 meV for the WSe2 monolayer and Dc = 12
    ± 1 meV for the WS2 monolayer. These results demonstrate the importance of second-order
    exciton recombination processes in transition-metal dichalcogenide structures.
  description_type: abstract
  lang: und

## Creator

- name: Justin Boddison-Chouinard
  role: author
- name: Alex Bogan
  role: author
- name: Pedro Barrios
  role: author
- name: Jean Lapointe
  role: author
- 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: Jarosław Pawłowski
  role: author
- name: Daniel Miravet
  role: author
- name: Maciej Bieniek
  role: author
- name: Pawel Hawrylak
  role: author
- name: Adina Luican-Mayer
  role: author
- name: Louis Gaudreau
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Gate-defined quantum confined channels
  schema: not_defined
- subject: conductance quantization
  schema: not_defined
- subject: transition metal dichalcogenide
  schema: not_defined

## Rights

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

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## Data origin



## Embargo



## Journal

- title: npj 2D Materials and Applications
  issn: '23977132'
  volume: '7'
  issue: '1'
  article_number: '50'

## Conference



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## Funding

- identifier: QSP
  funder_name: Gouvernement du Canada | National Research Council Canada

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## Fileset

- id: 7f8ded70-c48d-4ef4-82a7-97834e29fecc
  filename: s41699-023-00407-y.pdf
  content_type: application/pdf
  size: 2428879
  md5: 76db1bdc25e2c480ca10cdf599ae7b71

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fileset_id: 7f8ded70-c48d-4ef4-82a7-97834e29fecc
filename: s41699-023-00407-y.pdf