Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice

Autores
Zhang, Hao; Lamas, Carlos Alberto
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the ground-state phase diagram of the frustrated quantum J 1-J2 Heisenberg antiferromagnet on the honeycomb lattice using a mean-field approach in terms of the Schwinger boson representation of the spin operators. We present results for the ground-state energy, local magnetization, energy gap, and spin-spin correlations. The system shows magnetic long-range order for 0≤J2/J1â‰0.2075 (Néel) and 0.398â‰J2/J1≤0.5 (spiral). In the intermediate region, we find two magnetically disordered phases: a gapped spin liquid phase, which shows short-range Néel correlations (0.2075â‰J2/J1â‰0. 3732), and a lattice nematic phase (0.3732â‰J2/J 1â‰0.398), which is magnetically disordered but breaks lattice rotational symmetry. The errors in the values of the phase boundaries, which are implicit in the number of significant figures quoted, correspond purely to the error in the extrapolation of our finite-size results to the thermodynamic limit.
Fil: Zhang, Hao. University of Tokyo; Japón
Fil: Lamas, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Université de Toulouse; Francia. Centre National de la Recherche Scientifique; Francia
Materia
Spin Liquid
Graphene
Honeycomb Lattice
Quantum antiferromagnets
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
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oai:ri.conicet.gov.ar:11336/82381
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Exotic disordered phases in the quantum J1-J2 model on the honeycomb latticeZhang, HaoLamas, Carlos AlbertoSpin LiquidGrapheneHoneycomb LatticeQuantum antiferromagnetshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the ground-state phase diagram of the frustrated quantum J 1-J2 Heisenberg antiferromagnet on the honeycomb lattice using a mean-field approach in terms of the Schwinger boson representation of the spin operators. We present results for the ground-state energy, local magnetization, energy gap, and spin-spin correlations. The system shows magnetic long-range order for 0≤J2/J1â‰0.2075 (Néel) and 0.398â‰J2/J1≤0.5 (spiral). In the intermediate region, we find two magnetically disordered phases: a gapped spin liquid phase, which shows short-range Néel correlations (0.2075â‰J2/J1â‰0. 3732), and a lattice nematic phase (0.3732â‰J2/J 1â‰0.398), which is magnetically disordered but breaks lattice rotational symmetry. The errors in the values of the phase boundaries, which are implicit in the number of significant figures quoted, correspond purely to the error in the extrapolation of our finite-size results to the thermodynamic limit.Fil: Zhang, Hao. University of Tokyo; JapónFil: Lamas, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Université de Toulouse; Francia. Centre National de la Recherche Scientifique; FranciaAmerican Physical Society2013-01info: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/11336/82381Zhang, Hao; Lamas, Carlos Alberto; Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 87; 2; 1-2013; 24415-244261098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.87.024415info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.87.024415info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:51:44Zoai:ri.conicet.gov.ar:11336/82381instacron: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:34982025-09-29 09:51:44.675CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice
title Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice
spellingShingle Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice
Zhang, Hao
Spin Liquid
Graphene
Honeycomb Lattice
Quantum antiferromagnets
title_short Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice
title_full Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice
title_fullStr Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice
title_full_unstemmed Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice
title_sort Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice
dc.creator.none.fl_str_mv Zhang, Hao
Lamas, Carlos Alberto
author Zhang, Hao
author_facet Zhang, Hao
Lamas, Carlos Alberto
author_role author
author2 Lamas, Carlos Alberto
author2_role author
dc.subject.none.fl_str_mv Spin Liquid
Graphene
Honeycomb Lattice
Quantum antiferromagnets
topic Spin Liquid
Graphene
Honeycomb Lattice
Quantum antiferromagnets
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 ground-state phase diagram of the frustrated quantum J 1-J2 Heisenberg antiferromagnet on the honeycomb lattice using a mean-field approach in terms of the Schwinger boson representation of the spin operators. We present results for the ground-state energy, local magnetization, energy gap, and spin-spin correlations. The system shows magnetic long-range order for 0≤J2/J1â‰0.2075 (Néel) and 0.398â‰J2/J1≤0.5 (spiral). In the intermediate region, we find two magnetically disordered phases: a gapped spin liquid phase, which shows short-range Néel correlations (0.2075â‰J2/J1â‰0. 3732), and a lattice nematic phase (0.3732â‰J2/J 1â‰0.398), which is magnetically disordered but breaks lattice rotational symmetry. The errors in the values of the phase boundaries, which are implicit in the number of significant figures quoted, correspond purely to the error in the extrapolation of our finite-size results to the thermodynamic limit.
Fil: Zhang, Hao. University of Tokyo; Japón
Fil: Lamas, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Université de Toulouse; Francia. Centre National de la Recherche Scientifique; Francia
description We study the ground-state phase diagram of the frustrated quantum J 1-J2 Heisenberg antiferromagnet on the honeycomb lattice using a mean-field approach in terms of the Schwinger boson representation of the spin operators. We present results for the ground-state energy, local magnetization, energy gap, and spin-spin correlations. The system shows magnetic long-range order for 0≤J2/J1â‰0.2075 (Néel) and 0.398â‰J2/J1≤0.5 (spiral). In the intermediate region, we find two magnetically disordered phases: a gapped spin liquid phase, which shows short-range Néel correlations (0.2075â‰J2/J1â‰0. 3732), and a lattice nematic phase (0.3732â‰J2/J 1â‰0.398), which is magnetically disordered but breaks lattice rotational symmetry. The errors in the values of the phase boundaries, which are implicit in the number of significant figures quoted, correspond purely to the error in the extrapolation of our finite-size results to the thermodynamic limit.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
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/11336/82381
Zhang, Hao; Lamas, Carlos Alberto; Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 87; 2; 1-2013; 24415-24426
1098-0121
CONICET Digital
CONICET
url http://hdl.handle.net/11336/82381
identifier_str_mv Zhang, Hao; Lamas, Carlos Alberto; Exotic disordered phases in the quantum J1-J2 model on the honeycomb lattice; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 87; 2; 1-2013; 24415-24426
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.87.024415
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.87.024415
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
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score 13.070432

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