Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction

Autores
Bejas, Matias Hector; Zeyher, Roland; Greco, Andres Francisco
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The study of the charge excitations in cuprates is presently an interesting topic because of the development of new and precise x-ray experiments. Based on a large-N formulation of the two-dimensional t-J model, which allows us to consider all possible charge excitations on an equal footing, we investigate the charge spectrum for both electron- and hole-doped cases. In both cases, the instability toward phase separation, which has momentum modulation q=(0,0), is found to be robust in a large region of the doping-temperature phase diagram. If a short-range Coulomb repulsion is included the phase separation region shrinks, but the instability remains at q=(0,0). If on the other hand a two-dimensional long-range Coulomb interaction is included the instability sets in at q momenta forming a ring around q=(0,0). The computed charge spectrum in the translation-invariant phase shows well-formed rings. We discuss our results in the light of recent x-ray experiments in electron- and hole-doped cuprates, where ring-like shaped charge modulations have been reported.
Fil: Bejas, Matias Hector. 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: Zeyher, Roland. Max Planck Institute For Solid State Research; Alemania
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
Materia
Cupratos
Rings
RIXS
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:11336/215791
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/215791
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ring-like shaped charge modulations in the t-J model with long-range Coulomb interactionBejas, Matias HectorZeyher, RolandGreco, Andres FranciscoCupratosRingsRIXShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The study of the charge excitations in cuprates is presently an interesting topic because of the development of new and precise x-ray experiments. Based on a large-N formulation of the two-dimensional t-J model, which allows us to consider all possible charge excitations on an equal footing, we investigate the charge spectrum for both electron- and hole-doped cases. In both cases, the instability toward phase separation, which has momentum modulation q=(0,0), is found to be robust in a large region of the doping-temperature phase diagram. If a short-range Coulomb repulsion is included the phase separation region shrinks, but the instability remains at q=(0,0). If on the other hand a two-dimensional long-range Coulomb interaction is included the instability sets in at q momenta forming a ring around q=(0,0). The computed charge spectrum in the translation-invariant phase shows well-formed rings. We discuss our results in the light of recent x-ray experiments in electron- and hole-doped cuprates, where ring-like shaped charge modulations have been reported.Fil: Bejas, Matias Hector. 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: Zeyher, Roland. Max Planck Institute For Solid State Research; AlemaniaFil: 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; ArgentinaAmerican Physical Society2022-12info: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/11336/215791Bejas, Matias Hector; Zeyher, Roland; Greco, Andres Francisco; Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction; American Physical Society; Physical Review B; 106; 22; 12-2022; 1-92469-99502469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.106.224512info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:11:04Zoai:ri.conicet.gov.ar:11336/215791instacron: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:34982025-10-22 12:11:05.024CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction
title Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction
spellingShingle Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction
Bejas, Matias Hector
Cupratos
Rings
RIXS
title_short Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction
title_full Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction
title_fullStr Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction
title_full_unstemmed Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction
title_sort Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction
dc.creator.none.fl_str_mv Bejas, Matias Hector
Zeyher, Roland
Greco, Andres Francisco
author Bejas, Matias Hector
author_facet Bejas, Matias Hector
Zeyher, Roland
Greco, Andres Francisco
author_role author
author2 Zeyher, Roland
Greco, Andres Francisco
author2_role author
author
dc.subject.none.fl_str_mv Cupratos
Rings
RIXS
topic Cupratos
Rings
RIXS
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 study of the charge excitations in cuprates is presently an interesting topic because of the development of new and precise x-ray experiments. Based on a large-N formulation of the two-dimensional t-J model, which allows us to consider all possible charge excitations on an equal footing, we investigate the charge spectrum for both electron- and hole-doped cases. In both cases, the instability toward phase separation, which has momentum modulation q=(0,0), is found to be robust in a large region of the doping-temperature phase diagram. If a short-range Coulomb repulsion is included the phase separation region shrinks, but the instability remains at q=(0,0). If on the other hand a two-dimensional long-range Coulomb interaction is included the instability sets in at q momenta forming a ring around q=(0,0). The computed charge spectrum in the translation-invariant phase shows well-formed rings. We discuss our results in the light of recent x-ray experiments in electron- and hole-doped cuprates, where ring-like shaped charge modulations have been reported.
Fil: Bejas, Matias Hector. 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: Zeyher, Roland. Max Planck Institute For Solid State Research; Alemania
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
description The study of the charge excitations in cuprates is presently an interesting topic because of the development of new and precise x-ray experiments. Based on a large-N formulation of the two-dimensional t-J model, which allows us to consider all possible charge excitations on an equal footing, we investigate the charge spectrum for both electron- and hole-doped cases. In both cases, the instability toward phase separation, which has momentum modulation q=(0,0), is found to be robust in a large region of the doping-temperature phase diagram. If a short-range Coulomb repulsion is included the phase separation region shrinks, but the instability remains at q=(0,0). If on the other hand a two-dimensional long-range Coulomb interaction is included the instability sets in at q momenta forming a ring around q=(0,0). The computed charge spectrum in the translation-invariant phase shows well-formed rings. We discuss our results in the light of recent x-ray experiments in electron- and hole-doped cuprates, where ring-like shaped charge modulations have been reported.
publishDate 2022
dc.date.none.fl_str_mv 2022-12
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/11336/215791
Bejas, Matias Hector; Zeyher, Roland; Greco, Andres Francisco; Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction; American Physical Society; Physical Review B; 106; 22; 12-2022; 1-9
2469-9950
2469-9969
CONICET Digital
CONICET
url http://hdl.handle.net/11336/215791
identifier_str_mv Bejas, Matias Hector; Zeyher, Roland; Greco, Andres Francisco; Ring-like shaped charge modulations in the t-J model with long-range Coulomb interaction; American Physical Society; Physical Review B; 106; 22; 12-2022; 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/doi/10.1103/PhysRevB.106.224512
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
_version_ 1846782500653760512
score 13.229304

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