# Optical and acoustic plasmons in the layered material Sr2RuO4

https://mdr.nims.go.jp/datasets/956faabf-a543-46ec-9731-9204fecd9863

## File

- [10.1038-s41467-025-58978-x.pdf](https://mdr.nims.go.jp/filesets/14ae89b9-676f-405b-a357-eec2b95b95c2/download) ([Detail](https://mdr.nims.go.jp/filesets/14ae89b9-676f-405b-a357-eec2b95b95c2.md))

## Id

956faabf-a543-46ec-9731-9204fecd9863

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-05-22T05:39:23.806967Z

## Updated at

2025-05-22T23:30:30.033402Z

## Published at

2025-05-22T23:24:34.314003Z

## Doi



## First published url

https://doi.org/10.1038/s41467-025-58978-x

## Date published

2025-05-08

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Optical and acoustic plasmons in the layered material Sr2RuO4
  title_type: original
  lang: en

## Description

- description: We use momentum-dependent electron energy-loss spectroscopy in transmission
    to study collective charge excitations in the "strange" layer metal Sr2RuO4. We
    cover a complete range between in-plane and out-of-plane oscillations. Outside
    of the classical range of electron-hole excitations, leading to a Landau damping,
    we observe well defined plasmons. The optical (acoustic) plasmon due to an in-phase
    (out-of-phase) charge oscillation of neighbouring layers exhibits a quadratic
    (linear) dispersion. Using a model for the Coulomb interaction of the charges
    in a lay- ered system, it is possible to describe the complete range of plasmon
    excitations in a mean-field random phase approximation without taking correlation
    effects into account. There are no signs of over-damped plasmons predicted by
    holographic theories. This indicates that long wave- length charge excitations
    are not influenced by local correlation effects such as on-site Coulomb interaction
    and Hund’s exchange interaction.
  description_type: abstract
  lang: und

## Creator

- name: J. Schultz
  role: author
  orcid: https://orcid.org/0000-0001-5649-0983
- name: A. Lubk
  role: author
  orcid: https://orcid.org/0000-0003-2698-8806
- name: F. Jerzembeck
  role: author
- name: N. Kikugawa
  role: author
  orcid: https://orcid.org/0000-0003-3975-4478
- name: M. Knupfer
  role: author
- name: D. Wolf
  role: author
  orcid: https://orcid.org/0000-0001-5000-8578
- name: B. Büchner
  role: author
  orcid: https://orcid.org/0000-0002-3886-2680
- name: J. Fink
  role: author
  orcid: https://orcid.org/0000-0002-5286-1684

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Sr2RuO4, Plasmon
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '16'
  issue: '1'
  article_number: '4287'

## Conference



## Related item



## Funding

- identifier: '101094299'
  funder_name: EC | Horizon 2020 Framework Programme
- identifier: '461150024'
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: '461150024'
  funder_name: Deutsche Forschungsgemeinschaft

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Specific property for specimen



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## Fileset

- id: 14ae89b9-676f-405b-a357-eec2b95b95c2
  filename: 10.1038-s41467-025-58978-x.pdf
  content_type: application/pdf
  size: 1777343
  md5: 0c6eb73a4c9442b138d5cc9edcfad542

## Thumbnail

fileset_id: 14ae89b9-676f-405b-a357-eec2b95b95c2
filename: 10.1038-s41467-025-58978-x.pdf