# Plasmon dispersion in bilayer cuprate superconductors

https://mdr.nims.go.jp/datasets/f28622b6-c4ea-4366-9197-efdd7b126acd

## File

- [PhysRevB.109.144516.pdf](https://mdr.nims.go.jp/filesets/fce063ec-843a-429e-938b-727cca18a927/download) ([Detail](https://mdr.nims.go.jp/filesets/fce063ec-843a-429e-938b-727cca18a927.md))

## Id

f28622b6-c4ea-4366-9197-efdd7b126acd

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-08-20T09:41:57.836726Z

## Updated at

2024-08-29T23:30:34.720528Z

## Published at

2024-08-29T23:30:34.822885Z

## Doi



## First published url

https://doi.org/10.1103/physrevb.109.144516

## Date published

2024-04-16

## Recorded date published

2024-4

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Plasmon dispersion in bilayer cuprate superconductors
  title_type: original
  lang: en

## Description

- description: The essential building blocks of cuprate superconductors are two-dimensional
    CuO2 sheets interspersed with charge reservoir layers. In bilayer cuprates, two
    closely spaced CuO2 sheets are separated by a larger distance from the subsequent
    pair in the next unit cell.  In contrast to single-layer cuprates, prior theoretical
    work on bilayer systems has predicted two distinct acoustic plasmon bands for
    a given out-of-plane momentum transfer. Here we report random phase approximation
    (RPA) calculations for bilayer systems which corroborate the existence of two
    distinct plasmons bands. We find that the intensity of the lower-energy band is
    negligibly small in most parts of the Brillouin zone, whereas the higher-energy
    band carries significant spectral weight. We also present resonant inelastic x-ray
    scattering (RIXS) experiments at the O K-edge on the bilayer cuprate Y0.85Ca0.15Ba2Cu3O7
    (Ca-YBCO), which show only one dispersive plasmon branch, in agreement with the
    RPA calculations. In addition, the RPA results indicate that the dispersion of
    the higher-energy plasmon band in Ca-YBCO is not strictly acoustic, but exhibits
    a substantial energy gap of approximately 250 meV at the two-dimensional Brillouin
    zone center.
  description_type: abstract
  lang: und

## Creator

- name: M. Bejas
  role: author
- name: V. Zimmermann
  role: author
- name: D. Betto
  role: author
- name: T. D. Boyko
  role: author
- name: R. J. Green
  role: author
- name: T. Loew
  role: author
- name: N. B. Brookes
  role: author
- name: G. Cristiani
  role: author
- name: G. Logvenov
  role: author
- name: M. Minola
  role: author
- name: B. Keimer
  role: author
- name: H. Yamase
  role: author
  orcid: https://orcid.org/0000-0003-0328-5657
  organization: National Institute for Materials Science
- name: A. Greco
  role: author
- name: M. Hepting
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: bilayer material
  schema: not_defined
- subject: charge excitations
  schema: not_defined
- subject: plasmon
  schema: not_defined
- subject: high-temperature superconductors
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review B
  issn: 1550235X
  volume: '109'
  issue: '14'
  article_number: '144516'

## Conference



## Related item



## Funding

- identifier: JP20H01856
  funder_name: Japan Society for the Promotion of Science
- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- funder_name: Ministerio de Ciencia, Tecnología e Innovación
- funder_name: Canadian Light Source
- funder_name: University of Saskatchewan
- funder_name: Canada Foundation for Innovation
- funder_name: Natural Sciences and Engineering Research Council of Canada
- funder_name: National Research Council Canada
- funder_name: Canadian Institutes of Health Research

## 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



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## Fileset

- id: fce063ec-843a-429e-938b-727cca18a927
  filename: PhysRevB.109.144516.pdf
  content_type: application/pdf
  size: 1136893
  md5: 8d472e191f4b1a2fb1b34b1d163382ef

## Thumbnail

fileset_id: fce063ec-843a-429e-938b-727cca18a927
filename: PhysRevB.109.144516.pdf