Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings

Autores
Blesio, Germán Gabriel; Gonzalez, Matías Gabriel; Lisandrini, Franco Thomas
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the infinite-U Hubbard model on ladders of two, four, and six legs with nearest- (t) and next-nearest- (t′) neighbor hoppings by means of the density-matrix renormalization group algorithm. In particular, we analyze the stability of the Nagaoka state for several values of t′ when we vary the electron density ρ from half filling to the low-density limit. We build the two-dimensional phase diagram, where the fully spin polarized and paramagnetic states prevail. We find that the inclusion of a nonfrustrating next-nearest-neighbor hopping stabilizes the fully spin polarized phase up until |t′/t|=0.5. Surprisingly, for this value of t′, the ground state is fully spin polarized for almost any electron density 1 ρ 0, connecting the Nagaoka state to itinerant ferromagnetism at low density. Also, we find that the previously found checkerboard insulator phase at t′=0 and ρ=0.75 is unstable against t′.
Fil: Blesio, Germán Gabriel. 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: Gonzalez, Matías Gabriel. 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: Lisandrini, Franco Thomas. 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
U Hubbard model
Nagaoka’s theorem
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:11336/149921
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppingsBlesio, Germán GabrielGonzalez, Matías GabrielLisandrini, Franco ThomasU Hubbard modelNagaoka’s theoremhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the infinite-U Hubbard model on ladders of two, four, and six legs with nearest- (t) and next-nearest- (t′) neighbor hoppings by means of the density-matrix renormalization group algorithm. In particular, we analyze the stability of the Nagaoka state for several values of t′ when we vary the electron density ρ from half filling to the low-density limit. We build the two-dimensional phase diagram, where the fully spin polarized and paramagnetic states prevail. We find that the inclusion of a nonfrustrating next-nearest-neighbor hopping stabilizes the fully spin polarized phase up until |t′/t|=0.5. Surprisingly, for this value of t′, the ground state is fully spin polarized for almost any electron density 1 ρ 0, connecting the Nagaoka state to itinerant ferromagnetism at low density. Also, we find that the previously found checkerboard insulator phase at t′=0 and ρ=0.75 is unstable against t′.Fil: Blesio, Germán Gabriel. 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: Gonzalez, Matías Gabriel. 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: Lisandrini, Franco Thomas. 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 Society2019-05info: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/11336/149921Blesio, Germán Gabriel; Gonzalez, Matías Gabriel; Lisandrini, Franco Thomas; Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 99; 17; 5-2019; 1-71098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.99.174411info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.174411info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1905.05838info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:07:37Zoai:ri.conicet.gov.ar:11336/149921instacron: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:34982025-09-10 13:07:37.532CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings
title Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings
spellingShingle Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings
Blesio, Germán Gabriel
U Hubbard model
Nagaoka’s theorem
title_short Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings
title_full Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings
title_fullStr Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings
title_full_unstemmed Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings
title_sort Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings
dc.creator.none.fl_str_mv Blesio, Germán Gabriel
Gonzalez, Matías Gabriel
Lisandrini, Franco Thomas
author Blesio, Germán Gabriel
author_facet Blesio, Germán Gabriel
Gonzalez, Matías Gabriel
Lisandrini, Franco Thomas
author_role author
author2 Gonzalez, Matías Gabriel
Lisandrini, Franco Thomas
author2_role author
author
dc.subject.none.fl_str_mv U Hubbard model
Nagaoka’s theorem
topic U Hubbard model
Nagaoka’s theorem
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 infinite-U Hubbard model on ladders of two, four, and six legs with nearest- (t) and next-nearest- (t′) neighbor hoppings by means of the density-matrix renormalization group algorithm. In particular, we analyze the stability of the Nagaoka state for several values of t′ when we vary the electron density ρ from half filling to the low-density limit. We build the two-dimensional phase diagram, where the fully spin polarized and paramagnetic states prevail. We find that the inclusion of a nonfrustrating next-nearest-neighbor hopping stabilizes the fully spin polarized phase up until |t′/t|=0.5. Surprisingly, for this value of t′, the ground state is fully spin polarized for almost any electron density 1 ρ 0, connecting the Nagaoka state to itinerant ferromagnetism at low density. Also, we find that the previously found checkerboard insulator phase at t′=0 and ρ=0.75 is unstable against t′.
Fil: Blesio, Germán Gabriel. 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: Gonzalez, Matías Gabriel. 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: Lisandrini, Franco Thomas. 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 We study the infinite-U Hubbard model on ladders of two, four, and six legs with nearest- (t) and next-nearest- (t′) neighbor hoppings by means of the density-matrix renormalization group algorithm. In particular, we analyze the stability of the Nagaoka state for several values of t′ when we vary the electron density ρ from half filling to the low-density limit. We build the two-dimensional phase diagram, where the fully spin polarized and paramagnetic states prevail. We find that the inclusion of a nonfrustrating next-nearest-neighbor hopping stabilizes the fully spin polarized phase up until |t′/t|=0.5. Surprisingly, for this value of t′, the ground state is fully spin polarized for almost any electron density 1 ρ 0, connecting the Nagaoka state to itinerant ferromagnetism at low density. Also, we find that the previously found checkerboard insulator phase at t′=0 and ρ=0.75 is unstable against t′.
publishDate 2019
dc.date.none.fl_str_mv 2019-05
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/11336/149921
Blesio, Germán Gabriel; Gonzalez, Matías Gabriel; Lisandrini, Franco Thomas; Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 99; 17; 5-2019; 1-7
1098-0121
CONICET Digital
CONICET
url http://hdl.handle.net/11336/149921
identifier_str_mv Blesio, Germán Gabriel; Gonzalez, Matías Gabriel; Lisandrini, Franco Thomas; Magnetic phase diagram of the infinite- U Hubbard model with nearest- and next-nearest-neighbor hoppings; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 99; 17; 5-2019; 1-7
1098-0121
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.99.174411
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.174411
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1905.05838
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
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 12.993085

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