# Exciton-assisted electron tunnelling in van der Waals heterostructures

https://mdr.nims.go.jp/datasets/da8f8008-6e93-4038-a1a8-b34ea0e1f620

## File

- [s41563-023-01556-7.pdf](https://mdr.nims.go.jp/filesets/893cded1-f6ac-40db-a65d-66bcef02075f/download) ([Detail](https://mdr.nims.go.jp/filesets/893cded1-f6ac-40db-a65d-66bcef02075f.md))

## Id

da8f8008-6e93-4038-a1a8-b34ea0e1f620

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-27T04:14:23.227192Z

## Updated at

2025-02-27T23:30:51.765773Z

## Published at

2025-02-27T23:30:51.881524Z

## Doi



## First published url

https://doi.org/10.1038/s41563-023-01556-7

## Date published

2023-06-26

## Recorded date published

2023-9

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Exciton-assisted electron tunnelling in van der Waals heterostructures
  title_type: original
  lang: en

## Description

- description: The control of elastic and inelastic electron tunneling relies on materials
    with well defined interfaces. Van der Waals materials made of two-dimensional
    constituents form an ideal platform for such studies. Signatures of acoustic phonons
    and defect states have been observed in current-to-voltage (I–V ) measurements.
    These features can be explained by direct electron-phonon or electron-defect interactions.
    Here we demonstrate a novel two-step tunneling process, involving both phonons
    and excitons. We use tunnel junctions consisting of graphene and gold electrodes
    separated by hexagonal boron nitride (hBN) barriers with adjacent transition metal
    dichalcogenide (TMD) monolayers and observe prominent resonant features in I–V
    measurements. These resonances appear at bias voltages that correspond to TMD
    exciton energies and are accompanied by excitonic light emission. By placing the
    TMD outside of the tunneling pathway we demonstrate that this phonon-exciton mediated
    tunneling process does not require any charge injection into the TMD. This work
    demonstrates the appearance of optical modes in electrical transport measurements
    and introduces a new functionality for optoelectronic devices based on van der
    Waals materials.
  description_type: abstract
  lang: und

## Creator

- name: Lujun Wang
  role: author
- name: Sotirios Papadopoulos
  role: author
- name: Fadil Iyikanat
  role: author
- name: Jian Zhang
  role: author
- name: Jing Huang
  role: author
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Michel Calame
  role: author
- name: Mickael L. Perrin
  role: author
- name: F. Javier García de Abajo
  role: author
- name: Lukas Novotny
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Elastic and inelastic electron tunnelling
  schema: not_defined
- subject: van der Waals materials
  schema: not_defined
- subject: tunnelling process
  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 Materials
  issn: '14764660'
  volume: '22'
  issue: '9'
  start_page: 1094
  end_page: 1099

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## Related item



## Funding

- identifier: '200020_192362'
  funder_name: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen
    Forschung
- identifier: PCEFP2_203663
  funder_name: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen
    Forschung
- identifier: 189924 (Hydronics)
  funder_name: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen
    Forschung
- identifier: KAKENHI 19H0579019H05790, 20H00354 and 21H05233
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: KAKENHI 19H0579019H05790, 20H00354 and 21H05233
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: CERCA and AGAUR
  funder_name: Generalitat de Catalunya

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## Fileset

- id: 893cded1-f6ac-40db-a65d-66bcef02075f
  filename: s41563-023-01556-7.pdf
  content_type: application/pdf
  size: 2314643
  md5: 0b637f059a5f13f5c8e89da13e88bb4a

## Thumbnail

fileset_id: 893cded1-f6ac-40db-a65d-66bcef02075f
filename: s41563-023-01556-7.pdf