Random Bond XXZ Chains with Modulated Couplings

Autores
Cabra, Daniel Carlos; De Martino, A.; Grynberg, Marcelo Daniel; Peysson, S.; Pujol, P.
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The magnetization behavior of q -periodic antiferromagnetic spin- 1 / 2 Heisenberg chains under uniform magnetic fields is investigated in a background of disorder exchange distributions. By means of both real space decimation procedures and numerical diagonalizations in XX chains, it is found that for binary disorder the magnetization exhibits wide plateaus at values of 1 + 2 ( p − 1 ) / q , where p is the disorder strength. In contrast, no spin gaps are observed in the presence of continuous exchange distributions. We also study the magnetic susceptibility at low magnetic fields.
Facultad de Ciencias Exactas
Materia
Física
Decimation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/104629
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/104629
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Random Bond XXZ Chains with Modulated CouplingsCabra, Daniel CarlosDe Martino, A.Grynberg, Marcelo DanielPeysson, S.Pujol, P.FísicaDecimationThe magnetization behavior of q -periodic antiferromagnetic spin- 1 / 2 Heisenberg chains under uniform magnetic fields is investigated in a background of disorder exchange distributions. By means of both real space decimation procedures and numerical diagonalizations in XX chains, it is found that for binary disorder the magnetization exhibits wide plateaus at values of 1 + 2 ( p − 1 ) / q , where p is the disorder strength. In contrast, no spin gaps are observed in the presence of continuous exchange distributions. We also study the magnetic susceptibility at low magnetic fields.Facultad de Ciencias Exactas2000-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf4791-4794http://sedici.unlp.edu.ar/handle/10915/104629enginfo:eu-repo/semantics/altIdentifier/url/http://hdl.handle.net/11336/98446info:eu-repo/semantics/altIdentifier/issn/0031-9007info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.85.4791info:eu-repo/semantics/altIdentifier/hdl/11336/98446info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:03:40Zoai:sedici.unlp.edu.ar:10915/104629Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:03:41.04SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Random Bond XXZ Chains with Modulated Couplings
title Random Bond XXZ Chains with Modulated Couplings
spellingShingle Random Bond XXZ Chains with Modulated Couplings
Cabra, Daniel Carlos
Física
Decimation
title_short Random Bond XXZ Chains with Modulated Couplings
title_full Random Bond XXZ Chains with Modulated Couplings
title_fullStr Random Bond XXZ Chains with Modulated Couplings
title_full_unstemmed Random Bond XXZ Chains with Modulated Couplings
title_sort Random Bond XXZ Chains with Modulated Couplings
dc.creator.none.fl_str_mv Cabra, Daniel Carlos
De Martino, A.
Grynberg, Marcelo Daniel
Peysson, S.
Pujol, P.
author Cabra, Daniel Carlos
author_facet Cabra, Daniel Carlos
De Martino, A.
Grynberg, Marcelo Daniel
Peysson, S.
Pujol, P.
author_role author
author2 De Martino, A.
Grynberg, Marcelo Daniel
Peysson, S.
Pujol, P.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Física
Decimation
topic Física
Decimation
dc.description.none.fl_txt_mv The magnetization behavior of q -periodic antiferromagnetic spin- 1 / 2 Heisenberg chains under uniform magnetic fields is investigated in a background of disorder exchange distributions. By means of both real space decimation procedures and numerical diagonalizations in XX chains, it is found that for binary disorder the magnetization exhibits wide plateaus at values of 1 + 2 ( p − 1 ) / q , where p is the disorder strength. In contrast, no spin gaps are observed in the presence of continuous exchange distributions. We also study the magnetic susceptibility at low magnetic fields.
Facultad de Ciencias Exactas
description The magnetization behavior of q -periodic antiferromagnetic spin- 1 / 2 Heisenberg chains under uniform magnetic fields is investigated in a background of disorder exchange distributions. By means of both real space decimation procedures and numerical diagonalizations in XX chains, it is found that for binary disorder the magnetization exhibits wide plateaus at values of 1 + 2 ( p − 1 ) / q , where p is the disorder strength. In contrast, no spin gaps are observed in the presence of continuous exchange distributions. We also study the magnetic susceptibility at low magnetic fields.
publishDate 2000
dc.date.none.fl_str_mv 2000-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/104629
url http://sedici.unlp.edu.ar/handle/10915/104629
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://hdl.handle.net/11336/98446
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.85.4791
info:eu-repo/semantics/altIdentifier/hdl/11336/98446
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
4791-4794
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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