Plasmon dispersion in bilayer cuprate superconductors

Autores
Bejas, Matias Hector; Zimmermann, V.; Betto, D.; Boyko, T. D.; Green, R. J.; Loew, T.; Brookes, N. B.; Cristiani, G.; Logvenov, G.; Minola, M.; Keimer, B.; Yamase, H.; Greco, Andres Francisco; Hepting, M.
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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 plasmon 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.
Fil: Bejas, Matias Hector. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Zimmermann, V.. Max Planck Institute For Solid State Research; Alemania
Fil: Betto, D.. No especifíca;
Fil: Boyko, T. D.. No especifíca;
Fil: Green, R. J.. University of British Columbia; Canadá. University of Saskatchewan; Canadá
Fil: Loew, T.. Max Planck Institute For Solid State Research; Alemania
Fil: Brookes, N. B.. No especifíca;
Fil: Cristiani, G.. Max Planck Institute For Solid State Research; Alemania
Fil: Logvenov, G.. Max Planck Institute For Solid State Research; Alemania
Fil: Minola, M.. Max Planck Institute For Solid State Research; Alemania
Fil: Keimer, B.. Max Planck Institute For Solid State Research; Alemania
Fil: Yamase, H.. National Institute for Materials Science; Japón
Fil: Greco, Andres Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina
Fil: Hepting, M.. Max Planck Institute For Solid State Research; Alemania
Materia
SUPERCONDUCTIVITY
UNCONVENTIONAL SUPERCONDUCTORS
X-RAY TECHNIQUES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/267320
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Plasmon dispersion in bilayer cuprate superconductorsBejas, Matias HectorZimmermann, V.Betto, D.Boyko, T. D.Green, R. J.Loew, T.Brookes, N. B.Cristiani, G.Logvenov, G.Minola, M.Keimer, B.Yamase, H.Greco, Andres FranciscoHepting, M.SUPERCONDUCTIVITYUNCONVENTIONAL SUPERCONDUCTORSX-RAY TECHNIQUEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The 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 plasmon 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.Fil: Bejas, Matias Hector. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Zimmermann, V.. Max Planck Institute For Solid State Research; AlemaniaFil: Betto, D.. No especifíca;Fil: Boyko, T. D.. No especifíca;Fil: Green, R. J.. University of British Columbia; Canadá. University of Saskatchewan; CanadáFil: Loew, T.. Max Planck Institute For Solid State Research; AlemaniaFil: Brookes, N. B.. No especifíca;Fil: Cristiani, G.. Max Planck Institute For Solid State Research; AlemaniaFil: Logvenov, G.. Max Planck Institute For Solid State Research; AlemaniaFil: Minola, M.. Max Planck Institute For Solid State Research; AlemaniaFil: Keimer, B.. Max Planck Institute For Solid State Research; AlemaniaFil: Yamase, H.. National Institute for Materials Science; JapónFil: Greco, Andres Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; ArgentinaFil: Hepting, M.. Max Planck Institute For Solid State Research; AlemaniaAmerican Physical Society2024-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/267320Bejas, Matias Hector; Zimmermann, V.; Betto, D.; Boyko, T. D.; Green, R. J.; et al.; Plasmon dispersion in bilayer cuprate superconductors; American Physical Society; Physical Review B; 109; 14; 4-2024; 1-92469-99502469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevB.109.144516info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.109.144516info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:58:26Zoai:ri.conicet.gov.ar:11336/267320instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:58:26.442CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Plasmon dispersion in bilayer cuprate superconductors
title Plasmon dispersion in bilayer cuprate superconductors
spellingShingle Plasmon dispersion in bilayer cuprate superconductors
Bejas, Matias Hector
SUPERCONDUCTIVITY
UNCONVENTIONAL SUPERCONDUCTORS
X-RAY TECHNIQUES
title_short Plasmon dispersion in bilayer cuprate superconductors
title_full Plasmon dispersion in bilayer cuprate superconductors
title_fullStr Plasmon dispersion in bilayer cuprate superconductors
title_full_unstemmed Plasmon dispersion in bilayer cuprate superconductors
title_sort Plasmon dispersion in bilayer cuprate superconductors
dc.creator.none.fl_str_mv Bejas, Matias Hector
Zimmermann, V.
Betto, D.
Boyko, T. D.
Green, R. J.
Loew, T.
Brookes, N. B.
Cristiani, G.
Logvenov, G.
Minola, M.
Keimer, B.
Yamase, H.
Greco, Andres Francisco
Hepting, M.
author Bejas, Matias Hector
author_facet Bejas, Matias Hector
Zimmermann, V.
Betto, D.
Boyko, T. D.
Green, R. J.
Loew, T.
Brookes, N. B.
Cristiani, G.
Logvenov, G.
Minola, M.
Keimer, B.
Yamase, H.
Greco, Andres Francisco
Hepting, M.
author_role author
author2 Zimmermann, V.
Betto, D.
Boyko, T. D.
Green, R. J.
Loew, T.
Brookes, N. B.
Cristiani, G.
Logvenov, G.
Minola, M.
Keimer, B.
Yamase, H.
Greco, Andres Francisco
Hepting, M.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv SUPERCONDUCTIVITY
UNCONVENTIONAL SUPERCONDUCTORS
X-RAY TECHNIQUES
topic SUPERCONDUCTIVITY
UNCONVENTIONAL SUPERCONDUCTORS
X-RAY TECHNIQUES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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 plasmon 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.
Fil: Bejas, Matias Hector. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Zimmermann, V.. Max Planck Institute For Solid State Research; Alemania
Fil: Betto, D.. No especifíca;
Fil: Boyko, T. D.. No especifíca;
Fil: Green, R. J.. University of British Columbia; Canadá. University of Saskatchewan; Canadá
Fil: Loew, T.. Max Planck Institute For Solid State Research; Alemania
Fil: Brookes, N. B.. No especifíca;
Fil: Cristiani, G.. Max Planck Institute For Solid State Research; Alemania
Fil: Logvenov, G.. Max Planck Institute For Solid State Research; Alemania
Fil: Minola, M.. Max Planck Institute For Solid State Research; Alemania
Fil: Keimer, B.. Max Planck Institute For Solid State Research; Alemania
Fil: Yamase, H.. National Institute for Materials Science; Japón
Fil: Greco, Andres Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina
Fil: Hepting, M.. Max Planck Institute For Solid State Research; Alemania
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 plasmon 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.
publishDate 2024
dc.date.none.fl_str_mv 2024-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/267320
Bejas, Matias Hector; Zimmermann, V.; Betto, D.; Boyko, T. D.; Green, R. J.; et al.; Plasmon dispersion in bilayer cuprate superconductors; American Physical Society; Physical Review B; 109; 14; 4-2024; 1-9
2469-9950
2469-9969
CONICET Digital
CONICET
url http://hdl.handle.net/11336/267320
identifier_str_mv Bejas, Matias Hector; Zimmermann, V.; Betto, D.; Boyko, T. D.; Green, R. J.; et al.; Plasmon dispersion in bilayer cuprate superconductors; American Physical Society; Physical Review B; 109; 14; 4-2024; 1-9
2469-9950
2469-9969
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevB.109.144516
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.109.144516
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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