Ferromagnetic fluctuations in the Rashba-Hubbard model

Autores
Greco, Andrés; Bejas, Matias Hector; Schnyder, Andreas P.
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the occurrence and the origin of ferromagnetic fluctuations in the longitudinal spin susceptibility of the t-t′-Rashba-Hubbard model on the square lattice. The combined effect of the second-neighbor hopping t′ and the spin-orbit coupling leads to ferromagnetic fluctuations in a broad filling region. The spin-orbit coupling splits the energy bands, leading to two Van Hove fillings, where the sheets of the Fermi surface change their topology. Between these two Van Hove fillings the model shows ferromagnetic fluctuations. We find that these ferromagnetic fluctuations originate from interband contributions to the spin susceptibility. These interband contributions only arise if there is one holelike and one electronlike Fermi surface, which is the case for fillings in between the two Van Hove fillings. We discuss implications for experimental systems and propose a test on how to identify these types of ferromagnetic fluctuations in experiments.
Fil: Greco, Andrés. Max-Planck-Institut für Festkörperforschung; Alemania
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: Schnyder, Andreas P.. Max-Planck-Institut für Festkörperforschung; Alemania
Materia
Rashba-Hubbard model
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/143740
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Ferromagnetic fluctuations in the Rashba-Hubbard modelGreco, AndrésBejas, Matias HectorSchnyder, Andreas P.Rashba-Hubbard modelhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the occurrence and the origin of ferromagnetic fluctuations in the longitudinal spin susceptibility of the t-t′-Rashba-Hubbard model on the square lattice. The combined effect of the second-neighbor hopping t′ and the spin-orbit coupling leads to ferromagnetic fluctuations in a broad filling region. The spin-orbit coupling splits the energy bands, leading to two Van Hove fillings, where the sheets of the Fermi surface change their topology. Between these two Van Hove fillings the model shows ferromagnetic fluctuations. We find that these ferromagnetic fluctuations originate from interband contributions to the spin susceptibility. These interband contributions only arise if there is one holelike and one electronlike Fermi surface, which is the case for fillings in between the two Van Hove fillings. We discuss implications for experimental systems and propose a test on how to identify these types of ferromagnetic fluctuations in experiments.Fil: Greco, Andrés. Max-Planck-Institut für Festkörperforschung; AlemaniaFil: 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: Schnyder, Andreas P.. Max-Planck-Institut für Festkörperforschung; AlemaniaAmerican Physical Society2020-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/143740Greco, Andrés; Bejas, Matias Hector; Schnyder, Andreas P.; Ferromagnetic fluctuations in the Rashba-Hubbard model; American Physical Society; Physical Review B; 101; 17; 5-2020; 1-82469-99502469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevB.101.174420info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.101.174420info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:43:39Zoai:ri.conicet.gov.ar:11336/143740instacron: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:34982025-09-03 09:43:39.409CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ferromagnetic fluctuations in the Rashba-Hubbard model
title Ferromagnetic fluctuations in the Rashba-Hubbard model
spellingShingle Ferromagnetic fluctuations in the Rashba-Hubbard model
Greco, Andrés
Rashba-Hubbard model
title_short Ferromagnetic fluctuations in the Rashba-Hubbard model
title_full Ferromagnetic fluctuations in the Rashba-Hubbard model
title_fullStr Ferromagnetic fluctuations in the Rashba-Hubbard model
title_full_unstemmed Ferromagnetic fluctuations in the Rashba-Hubbard model
title_sort Ferromagnetic fluctuations in the Rashba-Hubbard model
dc.creator.none.fl_str_mv Greco, Andrés
Bejas, Matias Hector
Schnyder, Andreas P.
author Greco, Andrés
author_facet Greco, Andrés
Bejas, Matias Hector
Schnyder, Andreas P.
author_role author
author2 Bejas, Matias Hector
Schnyder, Andreas P.
author2_role author
author
dc.subject.none.fl_str_mv Rashba-Hubbard model
topic Rashba-Hubbard model
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We study the occurrence and the origin of ferromagnetic fluctuations in the longitudinal spin susceptibility of the t-t′-Rashba-Hubbard model on the square lattice. The combined effect of the second-neighbor hopping t′ and the spin-orbit coupling leads to ferromagnetic fluctuations in a broad filling region. The spin-orbit coupling splits the energy bands, leading to two Van Hove fillings, where the sheets of the Fermi surface change their topology. Between these two Van Hove fillings the model shows ferromagnetic fluctuations. We find that these ferromagnetic fluctuations originate from interband contributions to the spin susceptibility. These interband contributions only arise if there is one holelike and one electronlike Fermi surface, which is the case for fillings in between the two Van Hove fillings. We discuss implications for experimental systems and propose a test on how to identify these types of ferromagnetic fluctuations in experiments.
Fil: Greco, Andrés. Max-Planck-Institut für Festkörperforschung; Alemania
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: Schnyder, Andreas P.. Max-Planck-Institut für Festkörperforschung; Alemania
description We study the occurrence and the origin of ferromagnetic fluctuations in the longitudinal spin susceptibility of the t-t′-Rashba-Hubbard model on the square lattice. The combined effect of the second-neighbor hopping t′ and the spin-orbit coupling leads to ferromagnetic fluctuations in a broad filling region. The spin-orbit coupling splits the energy bands, leading to two Van Hove fillings, where the sheets of the Fermi surface change their topology. Between these two Van Hove fillings the model shows ferromagnetic fluctuations. We find that these ferromagnetic fluctuations originate from interband contributions to the spin susceptibility. These interband contributions only arise if there is one holelike and one electronlike Fermi surface, which is the case for fillings in between the two Van Hove fillings. We discuss implications for experimental systems and propose a test on how to identify these types of ferromagnetic fluctuations in experiments.
publishDate 2020
dc.date.none.fl_str_mv 2020-05
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/11336/143740
Greco, Andrés; Bejas, Matias Hector; Schnyder, Andreas P.; Ferromagnetic fluctuations in the Rashba-Hubbard model; American Physical Society; Physical Review B; 101; 17; 5-2020; 1-8
2469-9950
2469-9969
CONICET Digital
CONICET
url http://hdl.handle.net/11336/143740
identifier_str_mv Greco, Andrés; Bejas, Matias Hector; Schnyder, Andreas P.; Ferromagnetic fluctuations in the Rashba-Hubbard model; American Physical Society; Physical Review B; 101; 17; 5-2020; 1-8
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.101.174420
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.101.174420
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv 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 13.13397

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