# Imaging electron flow from collimating contacts in graphene

https://mdr.nims.go.jp/datasets/fbc1d679-f4d8-40f3-a87f-f2c7f2b6eb72

## File

- [Bhandari_2018_2D_Mater._5_021003.pdf](https://mdr.nims.go.jp/filesets/4a74b357-75a9-4979-954a-554687e8323b/download) ([Detail](https://mdr.nims.go.jp/filesets/4a74b357-75a9-4979-954a-554687e8323b.md))

## Id

fbc1d679-f4d8-40f3-a87f-f2c7f2b6eb72

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-19T07:48:37.986249Z

## Updated at

2025-02-23T13:49:11.330552Z

## Published at

2025-02-23T13:49:11.402359Z

## Doi



## First published url

https://doi.org/10.1088/2053-1583/aab38a

## Date published

2018-03-22

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Imaging electron flow from collimating contacts in graphene
  title_type: original
  lang: en

## Description

- description: We provide images of electron flow from a collimating contact that
    directly show the width and shape of the electron beam, obtained using a Scanning
    Gate Microscope (SGM) cooled to 4.2 K. The device is a hBN-encapsulated graphene
    hall bar with narrow side contacts on either side of the channel that have an
    electron emitter at the end and absorbing zig-zag contacts at both side. To form
    an image of electron flow, the SGM tip is raster scanned at a constant height
    above the sample surface while the transmission to a receiving contact on opposite
    sides of the channel is measured. The SGM tip creates a capacitive image charge
    in the graphene sheet that deflects electrons away from their original paths,
    changing the transmission T.
  description_type: abstract
  lang: und

## Creator

- name: S Bhandari
  role: author
- name: G H Lee
  role: author
- name: K Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: T Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: P Kim
  role: author
- name: R M Westervelt
  role: author

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: Ballistic electrons
  schema: not_defined
- subject: graphene
  schema: not_defined
- subject: electron-optic devices
  schema: not_defined

## Rights

- identifier: cc-by-3.0

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: 2D Materials
  issn: '20531583'
  volume: '5'
  issue: '2'
  article_number: '021003'

## Conference



## Related item



## Funding

- identifier: Grant-in-Aid for Scientific Researc
  funder_name: National Institute for Materials Science
- identifier: Global Research Laboratory Program/
  funder_name: National Research Foundation of Korea
- identifier: ECCS-1541959
  funder_name: National Science Foundation
- identifier: DE-FG02-07ER46422
  funder_name: Basic Energy Sciences

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 4a74b357-75a9-4979-954a-554687e8323b
  filename: Bhandari_2018_2D_Mater._5_021003.pdf
  content_type: application/pdf
  size: 1940154
  md5: e34f7f3db2568d4151486470247e2a4a

## Thumbnail

fileset_id: 4a74b357-75a9-4979-954a-554687e8323b
filename: Bhandari_2018_2D_Mater._5_021003.pdf