# Localisation-to-delocalisation transition of moiré excitons in WSe2/MoSe2 heterostructures

https://mdr.nims.go.jp/datasets/0287a8c3-1dc3-4459-9cf9-af89b7c1439e

## File

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## Id

0287a8c3-1dc3-4459-9cf9-af89b7c1439e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-07T06:58:14.923991Z

## Updated at

2025-02-10T03:30:19.999386Z

## Published at

2025-02-10T03:30:21.194475Z

## Doi



## First published url

https://doi.org/10.1038/s41467-024-44739-9

## Date published

2024-02-05

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Localisation-to-delocalisation transition of moiré excitons in WSe2/MoSe2
    heterostructures
  title_type: original
  lang: en

## Description

- description: Moiré excitons (MXs) are electron-hole pairs localized by the periodic
    (moiré) potential forming when two two-dimensional crystals are stacked together
    in a heterostructure (HS). MXs exhibit intriguing properties that can be exploited
    e.g. for achieving strongly correlated electronic phases at relatively high temperatures
    or nanoscale ordered arrays of thermally stable single-photon emitters. Here,
    we studied the exciton properties of a WSe2/MoSe2 HS from T=6 K to room temperature
    using time-resolved and continuous-wave micro-photoluminescence also under magnetic
    field. The emission lineshape evolution with temperature and its dependence on
    the photogenerated carrier density show clear signatures that MXs de-trap from
    the moir ́e potential and turn into free interlayer excitons (IXs) at T ≳120 K.
    The MX-to-IX transition is also apparent from Zeeman splitting measurements showing
    that the exciton gyromagnetic factor changes dramatically, reversing its sign
    when the moir ́e potential is not capable to localize excitons at elevated temperatures.
    At the same time, the exciton formation and decay times reduce drastically with
    increasing T .
  description_type: abstract
  lang: und

## Creator

- name: Elena Blundo
  role: author
- name: Federico Tuzi
  role: author
- name: Salvatore Cianci
  role: author
- name: Marzia Cuccu
  role: author
- name: Katarzyna Olkowska-Pucko
  role: author
- name: Łucja Kipczak
  role: author
- name: Giorgio Contestabile
  role: author
- name: Antonio Miriametro
  role: author
- name: Marco Felici
  role: author
- name: Giorgio Pettinari
  role: author
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  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: Adam Babiński
  role: author
- name: Maciej R. Molas
  role: author
- name: Antonio Polimeni
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Moiré excitons
  schema: not_defined
- subject: interlayer excitons
  schema: not_defined
- subject: temperature dependence
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '15'
  issue: '1'
  article_number: '1057'

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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Fileset

- id: c6a77ccf-3415-46c5-8f1a-a7228dd39e43
  filename: s41467-024-44739-9.pdf
  content_type: application/pdf
  size: 2590029
  md5: b27ad6f9c918ce80d3b5216504d86158

## Thumbnail

fileset_id: c6a77ccf-3415-46c5-8f1a-a7228dd39e43
filename: s41467-024-44739-9.pdf