# Landauer Resistivity Dipole at One-Dimensional Defect Revealed via near-Field Photocurrent Nanoscopy

https://mdr.nims.go.jp/datasets/43d770b0-fb50-4e32-8436-3598eb6af10e

## File

- [falorsi-et-al-2025-landauer-resistivity-dipole-at-one-dimensional-defect-revealed-via-near-field-photocurrent-nanoscopy.pdf](https://mdr.nims.go.jp/filesets/b8d43b44-5b76-4ae9-a189-08344998e524/download) ([Detail](https://mdr.nims.go.jp/filesets/b8d43b44-5b76-4ae9-a189-08344998e524.md))

## Id

43d770b0-fb50-4e32-8436-3598eb6af10e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-03-08T04:45:36.356999Z

## Updated at

2026-03-10T03:30:12.302274Z

## Published at

2026-03-10T00:03:18.251491Z

## Doi



## First published url

https://doi.org/10.1021/acs.nanolett.5c00437

## Date published

2025-05-28

## Recorded date published

2025-5-28

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Landauer Resistivity Dipole at One-Dimensional Defect Revealed via near-Field
    Photocurrent Nanoscopy
  title_type: original
  lang: en

## Description

- description: The fundamental question how to describe Ohmic resistance at the nanoscale
    has been answered by Landauer in his seminal picture of the so-called Landauer
    resistivity dipole. This picture has been theoretically well understood, however
    experimentally there are only few studies due to the need for a non-invasive local
    probe. Here we use the nanometer lateral resolution of near-field photocurrent
    imaging to thoroughly characterize a buried monolayer – bilayer graphene interface
    as an ideal one dimensional defect for the Landauer resistivity dipole. Via systematic
    tuning of the overall charge carrier density and the current flow we are able
    to detect the formation of Landauer resistivity dipoles due to charge carrier
    accumulation around the one dimensional defects. We found that, for Fermi energy
    values near the charge neutrality point (i.e. at low hole or electron doping),
    the photocurrent exhibits the same polarity as the applied source-drain voltage,
    which is consistent with changes in carrier concentration induced by the Landauer
    resistivity dipoles. This signature is no longer evident at higher charge carrier
    density in agreement with the performed numerical calculations. Photocurrent nanoscopy
    can thus serve as non-invasive technique to study local dissipation at hidden
    interfaces.
  description_type: abstract
  lang: und

## Creator

- name: Francesca Falorsi
  role: author
- name: Marco Dembecki
  role: author
- name: Christian Eckel
  role: author
- name: Monica Kolek Martinez de Azagra
  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: Martin Statz
  role: author
- name: R. Thomas Weitz
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: 'Landauer resistivity dipole (LRD)
    '
  schema: not_defined
- subject: photocurrent nanoscopy
  schema: not_defined
- subject: graphene interface
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-04-10

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '25'
  issue: '21'
  start_page: 8495
  end_page: 8502

## Conference



## Related item



## Funding

- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: SFB 1073  B10
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: SFB 1073 A05
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: SPP 2244
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: JPMJCR24A5
  funder_name: Core Research for Evolutional Science and Technology
- funder_name: Center for NanoScience, Ludwig-Maximilians-Universit?t M?nchen
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: 23H02052
  funder_name: Japan Society for the Promotion of Science
- funder_name: NIM Nanosystems Initiative Munich

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Process for specimen treatment



## Computational method



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## Custom property



## Fileset

- id: b8d43b44-5b76-4ae9-a189-08344998e524
  filename: falorsi-et-al-2025-landauer-resistivity-dipole-at-one-dimensional-defect-revealed-via-near-field-photocurrent-nanoscopy.pdf
  content_type: application/pdf
  size: 6662348
  md5: f7877bed6ec503552cfca2f0770500b1

## Thumbnail

fileset_id: b8d43b44-5b76-4ae9-a189-08344998e524
filename: falorsi-et-al-2025-landauer-resistivity-dipole-at-one-dimensional-defect-revealed-via-near-field-photocurrent-nanoscopy.pdf