Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fields

Autores
Rosales, Héctor Diego; Arlego, Marcelo José Fabián; Gómez Albarracín, Flavia Alejandra
Año de publicación
2014
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
We study the ground state phase diagram of a frustrated spin-1/2 four-leg tube in an external magnetic field. We explore the parameter space of this model in the regime of all-antiferromagnetic exchange couplings by means of three different approaches: density matrix renormalization group (DMRG), a low-energy effective Hamiltonian (LEH) and a Hartree variational approach (HVA). We find that in the limit of weakly interacting plaquettes, singlet and triplet states play an important role in the formation of magnetization plateaux. We study the transition regions numerically and analytically, and find that they are described, at first order in a strong- coupling expansion, by an XXZ spin-1/2 chain in a magnetic field. These results are consistent with the DMRG and HVA calculations.
Publicado en Journal of Physics: conference series vol. 568
Instituto de Física La Plata
Materia
Física
Antiferromagnetic exchange
Magnetization plateaux
Magnetic fields
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/85327
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/85327
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fieldsRosales, Héctor DiegoArlego, Marcelo José FabiánGómez Albarracín, Flavia AlejandraFísicaAntiferromagnetic exchangeMagnetization plateauxMagnetic fieldsWe study the ground state phase diagram of a frustrated spin-1/2 four-leg tube in an external magnetic field. We explore the parameter space of this model in the regime of all-antiferromagnetic exchange couplings by means of three different approaches: density matrix renormalization group (DMRG), a low-energy effective Hamiltonian (LEH) and a Hartree variational approach (HVA). We find that in the limit of weakly interacting plaquettes, singlet and triplet states play an important role in the formation of magnetization plateaux. We study the transition regions numerically and analytically, and find that they are described, at first order in a strong- coupling expansion, by an XXZ spin-1/2 chain in a magnetic field. These results are consistent with the DMRG and HVA calculations.Publicado en <i>Journal of Physics: conference series</i> vol. 568Instituto de Física La Plata2014-08info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionObjeto de conferenciahttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/85327enginfo:eu-repo/semantics/altIdentifier/issn/1742-6588info:eu-repo/semantics/altIdentifier/doi/10.1088/1742-6596/568/4/042023info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:25Zoai:sedici.unlp.edu.ar:10915/85327Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:26.045SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fields
title Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fields
spellingShingle Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fields
Rosales, Héctor Diego
Física
Antiferromagnetic exchange
Magnetization plateaux
Magnetic fields
title_short Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fields
title_full Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fields
title_fullStr Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fields
title_full_unstemmed Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fields
title_sort Magnetization plateaux and jumps in frustrated four-leg spin tubes in magnetic fields
dc.creator.none.fl_str_mv Rosales, Héctor Diego
Arlego, Marcelo José Fabián
Gómez Albarracín, Flavia Alejandra
author Rosales, Héctor Diego
author_facet Rosales, Héctor Diego
Arlego, Marcelo José Fabián
Gómez Albarracín, Flavia Alejandra
author_role author
author2 Arlego, Marcelo José Fabián
Gómez Albarracín, Flavia Alejandra
author2_role author
author
dc.subject.none.fl_str_mv Física
Antiferromagnetic exchange
Magnetization plateaux
Magnetic fields
topic Física
Antiferromagnetic exchange
Magnetization plateaux
Magnetic fields
dc.description.none.fl_txt_mv We study the ground state phase diagram of a frustrated spin-1/2 four-leg tube in an external magnetic field. We explore the parameter space of this model in the regime of all-antiferromagnetic exchange couplings by means of three different approaches: density matrix renormalization group (DMRG), a low-energy effective Hamiltonian (LEH) and a Hartree variational approach (HVA). We find that in the limit of weakly interacting plaquettes, singlet and triplet states play an important role in the formation of magnetization plateaux. We study the transition regions numerically and analytically, and find that they are described, at first order in a strong- coupling expansion, by an XXZ spin-1/2 chain in a magnetic field. These results are consistent with the DMRG and HVA calculations.
Publicado en <i>Journal of Physics: conference series</i> vol. 568
Instituto de Física La Plata
description We study the ground state phase diagram of a frustrated spin-1/2 four-leg tube in an external magnetic field. We explore the parameter space of this model in the regime of all-antiferromagnetic exchange couplings by means of three different approaches: density matrix renormalization group (DMRG), a low-energy effective Hamiltonian (LEH) and a Hartree variational approach (HVA). We find that in the limit of weakly interacting plaquettes, singlet and triplet states play an important role in the formation of magnetization plateaux. We study the transition regions numerically and analytically, and find that they are described, at first order in a strong- coupling expansion, by an XXZ spin-1/2 chain in a magnetic field. These results are consistent with the DMRG and HVA calculations.
publishDate 2014
dc.date.none.fl_str_mv 2014-08
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http://purl.org/coar/resource_type/c_5794
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url http://sedici.unlp.edu.ar/handle/10915/85327
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1742-6588
info:eu-repo/semantics/altIdentifier/doi/10.1088/1742-6596/568/4/042023
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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