# Experimental signatures of the transition from acoustic plasmon to electronic sound in graphene

https://mdr.nims.go.jp/datasets/fdf7f4c2-38f8-4dbb-b6a1-2b4d1cba3477

## File

- [sciadv.adi0415.pdf](https://mdr.nims.go.jp/filesets/769b60ee-bef4-458d-85f7-6f2040b2176e/download) ([Detail](https://mdr.nims.go.jp/filesets/769b60ee-bef4-458d-85f7-6f2040b2176e.md))

## Id

fdf7f4c2-38f8-4dbb-b6a1-2b4d1cba3477

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-18T01:07:35.567415Z

## Updated at

2025-02-23T13:46:24.520051Z

## Published at

2025-02-23T13:46:24.646264Z

## Doi



## First published url

https://doi.org/10.1126/sciadv.adi0415

## Date published

2023-09-29

## Recorded date published

2023-9-29

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Experimental signatures of the transition from acoustic plasmon to electronic
    sound in graphene
  title_type: original
  lang: en

## Description

- description: Fermi liquids respond differently to perturbations depending on whether
    their frequency is larger (collisionless regime) or smaller (hydrodynamic regime)
    than the inter-particle collision rate. This results in a different phase velocity
    between the collisionless zero sound and hydrodynamic first sound. We performed
    terahertz photocurrent nanoscopy measurements on graphene devices, with a metallic
    gate in close proximity to the sample, to investigate acoustic plasmons, the counterpart
    of sound modes in electronic Fermi liquids. We report the observation of a change
    in the phase velocity of acoustic plasmons in graphene when the excitation frequency
    approaches the electron- electron collision rate. This first observation of the
    first sound mode in an electronic Fermi liquid is of fundamental interest and
    can enable novel terahertz emitter and detection concepts.
  description_type: abstract
  lang: und

## Creator

- name: David Barcons Ruiz
  role: author
- name: Niels C.H. Hesp
  role: author
- name: Hanan Herzig Sheinfux
  role: author
- name: Carlos Ramos Marimón
  role: author
- name: Curdin Martin Maissen
  role: author
- name: Alessandro Principi
  role: author
- name: Reza Asgari
  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: Marco Polini
  role: author
- name: Rainer Hillenbrand
  role: author
- name: Iacopo Torre
  role: author
- name: Frank H.L. Koppens
  role: author

## Contact agent



## Publisher

organization: American Association for the Advancement of Science (AAAS)

## Managing organization



## Keyword

- subject: Fermi liquids
  schema: not_defined
- subject: terahertz photocurrent nanoscopy
  schema: not_defined
- subject: acoustic plasmons
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Science Advances
  issn: '23752548'
  volume: '9'
  issue: '39'
  article_number: eadi0415

## Conference



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## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Specific property for specimen



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## Fileset

- id: 769b60ee-bef4-458d-85f7-6f2040b2176e
  filename: sciadv.adi0415.pdf
  content_type: application/pdf
  size: 776574
  md5: 1ef7b0850a51b01eb38915c4451acfe4

## Thumbnail

fileset_id: 769b60ee-bef4-458d-85f7-6f2040b2176e
filename: sciadv.adi0415.pdf