Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model

Autores
Greco, Andres Francisco; Schnyder, Andreas P.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Motivated by the recent resurgence of interest in topological superconductivity, we study superconducting pairing instabilities of the hole-doped Rashba-Hubbard model on the square lattice with first- and second-neighbor hopping. Within the random phase approximation, we compute the spin-fluctuation-mediated pairing interactions as a function of filling. Rashba spin-orbit coupling splits the spin degeneracies of the bands, which leads to two van Hove singularities at two different fillings. We find that, for a doping region in between these two van Hove fillings, the spin fluctuations exhibit a strong ferromagnetic contribution. Because of these ferromagnetic fluctuations, there is a strong tendency towards spin-triplet f-wave pairing within this filling region, resulting in a topologically nontrivial phase.
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
Fil: Schnyder, Andreas P.. Max-Planck-Institute for Solid State Research; Alemania
Materia
SPIN-ORBIT COUPLING
SUPERCONDUCTIVITY
ANTIFERROMAGNETISM
PAIRING MECHANISMS
SPIN-TRIPLET PAIRING
TOPOLOGICAL PHASES OF MATTER
SUPERCONDUCTING ORDER PARAMETER
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:11336/92093
Acceder
id CONICETDig_d6a0e018967e1587f262c0115693a990
oai_identifier_str oai:ri.conicet.gov.ar:11336/92093
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard ModelGreco, Andres FranciscoSchnyder, Andreas P.SPIN-ORBIT COUPLINGSUPERCONDUCTIVITYANTIFERROMAGNETISMPAIRING MECHANISMSSPIN-TRIPLET PAIRINGTOPOLOGICAL PHASES OF MATTERSUPERCONDUCTING ORDER PARAMETERhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Motivated by the recent resurgence of interest in topological superconductivity, we study superconducting pairing instabilities of the hole-doped Rashba-Hubbard model on the square lattice with first- and second-neighbor hopping. Within the random phase approximation, we compute the spin-fluctuation-mediated pairing interactions as a function of filling. Rashba spin-orbit coupling splits the spin degeneracies of the bands, which leads to two van Hove singularities at two different fillings. We find that, for a doping region in between these two van Hove fillings, the spin fluctuations exhibit a strong ferromagnetic contribution. Because of these ferromagnetic fluctuations, there is a strong tendency towards spin-triplet f-wave pairing within this filling region, resulting in a topologically nontrivial phase.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; ArgentinaFil: Schnyder, Andreas P.. Max-Planck-Institute for Solid State Research; AlemaniaAmerican Physical Society2018-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/92093Greco, Andres Francisco; Schnyder, Andreas P.; Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model; American Physical Society; Physical Review Letters; 120; 17; 4-2018; 1-5; 1770020031-9007CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevLett.120.177002info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.120.177002info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T09:44:15Zoai:ri.conicet.gov.ar:11336/92093instacron: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:34982025-11-05 09:44:15.401CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model
title Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model
spellingShingle Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model
Greco, Andres Francisco
SPIN-ORBIT COUPLING
SUPERCONDUCTIVITY
ANTIFERROMAGNETISM
PAIRING MECHANISMS
SPIN-TRIPLET PAIRING
TOPOLOGICAL PHASES OF MATTER
SUPERCONDUCTING ORDER PARAMETER
title_short Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model
title_full Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model
title_fullStr Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model
title_full_unstemmed Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model
title_sort Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model
dc.creator.none.fl_str_mv Greco, Andres Francisco
Schnyder, Andreas P.
author Greco, Andres Francisco
author_facet Greco, Andres Francisco
Schnyder, Andreas P.
author_role author
author2 Schnyder, Andreas P.
author2_role author
dc.subject.none.fl_str_mv SPIN-ORBIT COUPLING
SUPERCONDUCTIVITY
ANTIFERROMAGNETISM
PAIRING MECHANISMS
SPIN-TRIPLET PAIRING
TOPOLOGICAL PHASES OF MATTER
SUPERCONDUCTING ORDER PARAMETER
topic SPIN-ORBIT COUPLING
SUPERCONDUCTIVITY
ANTIFERROMAGNETISM
PAIRING MECHANISMS
SPIN-TRIPLET PAIRING
TOPOLOGICAL PHASES OF MATTER
SUPERCONDUCTING ORDER PARAMETER
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Motivated by the recent resurgence of interest in topological superconductivity, we study superconducting pairing instabilities of the hole-doped Rashba-Hubbard model on the square lattice with first- and second-neighbor hopping. Within the random phase approximation, we compute the spin-fluctuation-mediated pairing interactions as a function of filling. Rashba spin-orbit coupling splits the spin degeneracies of the bands, which leads to two van Hove singularities at two different fillings. We find that, for a doping region in between these two van Hove fillings, the spin fluctuations exhibit a strong ferromagnetic contribution. Because of these ferromagnetic fluctuations, there is a strong tendency towards spin-triplet f-wave pairing within this filling region, resulting in a topologically nontrivial phase.
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
Fil: Schnyder, Andreas P.. Max-Planck-Institute for Solid State Research; Alemania
description Motivated by the recent resurgence of interest in topological superconductivity, we study superconducting pairing instabilities of the hole-doped Rashba-Hubbard model on the square lattice with first- and second-neighbor hopping. Within the random phase approximation, we compute the spin-fluctuation-mediated pairing interactions as a function of filling. Rashba spin-orbit coupling splits the spin degeneracies of the bands, which leads to two van Hove singularities at two different fillings. We find that, for a doping region in between these two van Hove fillings, the spin fluctuations exhibit a strong ferromagnetic contribution. Because of these ferromagnetic fluctuations, there is a strong tendency towards spin-triplet f-wave pairing within this filling region, resulting in a topologically nontrivial phase.
publishDate 2018
dc.date.none.fl_str_mv 2018-04
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/11336/92093
Greco, Andres Francisco; Schnyder, Andreas P.; Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model; American Physical Society; Physical Review Letters; 120; 17; 4-2018; 1-5; 177002
0031-9007
CONICET Digital
CONICET
url http://hdl.handle.net/11336/92093
identifier_str_mv Greco, Andres Francisco; Schnyder, Andreas P.; Mechanism for Unconventional Superconductivity in the Hole-Doped Rashba-Hubbard Model; American Physical Society; Physical Review Letters; 120; 17; 4-2018; 1-5; 177002
0031-9007
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/PhysRevLett.120.177002
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.120.177002
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
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 13.084122

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