# Emergent Cavity Junction around Metal-on-Graphene Contacts

https://mdr.nims.go.jp/datasets/5d9aa525-a2d1-4603-a2df-e6cee15a7433

## File

- [zhao-et-al-2025-emergent-cavity-junction-around-metal-on-graphene-contacts.pdf](https://mdr.nims.go.jp/filesets/941b024a-7321-40d3-b3b8-801cc3870da9/download) ([Detail](https://mdr.nims.go.jp/filesets/941b024a-7321-40d3-b3b8-801cc3870da9.md))

## Id

5d9aa525-a2d1-4603-a2df-e6cee15a7433

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-02-15T02:27:01.628768Z

## Updated at

2026-02-17T03:30:10.313776Z

## Published at

2026-02-17T00:11:02.153449Z

## Doi



## First published url

https://doi.org/10.1021/acsnano.4c16191

## Date published

2025-05-20

## Recorded date published

2025-5-20

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Emergent Cavity Junction around Metal-on-Graphene Contacts
  title_type: original
  lang: en

## Description

- description: 'Harnessing graphene devices for applications relies on a comprehensive
    understanding of how to interact with them. Specifically, scattering processes
    at the interface with metallic contacts can induce reproducible abnormalities
    in measurements. Here, we report on emergent trans- port signatures appearing
    when contacting sub- micrometer high-quality metallic top contacts to graphene.
    Using electrostatic simulations and first- principle calculations, we reveal their
    origin: the contact induces an n-doped radial cavity around it, which is cooperatively
    defined by the metal- induced electrostatic potential and Klein tunnel- ing. This
    intricate mechanism leads to secondary resistance peaks as a function of graphene
    doping that decreases with increasing contact size. Interestingly, in the presence
    of a perpendicular magnetic field, the cavity spawns a distinct set of Landau
    levels that interferes with the Landau fan emanating from the graphene bulk. Essentially,
    an emergent ’second bulk’ forms around the contact, as a result of the interplay
    between the magnetic field and the contact-induced electrostatic potential. The
    interplay between the intrinsic and emergent bulks leads to direct observation
    of bulk-boundary correspondence in our experiments. Our work unveils the microscopic
    mechanisms manifesting at metal-graphene inter- faces, opening new avenues for
    understanding and devising graphene-based electronic devices.'
  description_type: abstract
  lang: und

## Creator

- name: Yuhao Zhao
  role: author
- name: Maëlle Kapfer
  role: author
- name: Megan Eisele
  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: Oded Zilberberg
  role: author
- name: Bjarke S. Jessen
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: metal-graphene contacts
  schema: not_defined
- subject: cavity junction
  schema: not_defined
- subject: 'Klein tunneling
    '
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/
  date_licensed: 2025-05-06

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: ACS Nano
  issn: '19360851'
  volume: '19'
  issue: '19'
  start_page: 18156
  end_page: 18163

## Conference



## Related item



## Funding

- identifier: DE-SC0019443
  funder_name: Energy Frontier Research Centers
- identifier: ETH-28 23-1
  funder_name: Eidgen?ssische Technische Hochschule Z?rich
- identifier: '449653034'
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: JPMJCR24A5
  funder_name: Core Research for Evolutional Science and Technology
- identifier: NNF23OC0084494
  funder_name: Novo Nordisk Fonden
- funder_name: Villum Fonden
- identifier: 21H05233
  funder_name: JSPS KAKENHI
- identifier: 23H02052
  funder_name: JSPS KAKENHI

## 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



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## Custom property



## Fileset

- id: 941b024a-7321-40d3-b3b8-801cc3870da9
  filename: zhao-et-al-2025-emergent-cavity-junction-around-metal-on-graphene-contacts.pdf
  content_type: application/pdf
  size: 5896483
  md5: dca69eebac6d1b8cde71945ceb522d5f

## Thumbnail

fileset_id: 941b024a-7321-40d3-b3b8-801cc3870da9
filename: zhao-et-al-2025-emergent-cavity-junction-around-metal-on-graphene-contacts.pdf