Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2

Autores
Rozenberg, Marcelo Javier; Chitra, R.
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Motivated by the recent NMR experiments on ZnCu3(OH)6Cl2, we study the effect of nonmagnetic defects on the antiferromagnetic spin-1/2 kagome lattice. We use exact diagonalization methods to study the effect of two such defects on finite-size systems. Our results, obtained without adjustable parameters, are in good quantitative agreement with recent 17O NMR data. They provide support for the experimental interpretation of the presence of defects within the kagome layers due to Zn/Cu substitutions. Our results also show that disorder effects become relevant at lower temperatures, raising questions about the experimental evidence for the absence of an intrinsic spin gap in the kagome two-dimensional layers. ©2008 The American Physical Society.
Fil: Rozenberg, Marcelo Javier. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Chitra, R.. Laboratoire de Physique Theorique de la Matiere Condensee; Francia
Materia
Quantum Magnetism
Frustration
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:11336/61543
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2Rozenberg, Marcelo JavierChitra, R.Quantum MagnetismFrustrationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Motivated by the recent NMR experiments on ZnCu3(OH)6Cl2, we study the effect of nonmagnetic defects on the antiferromagnetic spin-1/2 kagome lattice. We use exact diagonalization methods to study the effect of two such defects on finite-size systems. Our results, obtained without adjustable parameters, are in good quantitative agreement with recent 17O NMR data. They provide support for the experimental interpretation of the presence of defects within the kagome layers due to Zn/Cu substitutions. Our results also show that disorder effects become relevant at lower temperatures, raising questions about the experimental evidence for the absence of an intrinsic spin gap in the kagome two-dimensional layers. ©2008 The American Physical Society.Fil: Rozenberg, Marcelo Javier. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Chitra, R.. Laboratoire de Physique Theorique de la Matiere Condensee; FranciaAmerican Physical Society2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/61543Rozenberg, Marcelo Javier; Chitra, R.; Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 78; 13; 12-2008; 132406-1324091098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.78.132406info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:55:45Zoai:ri.conicet.gov.ar:11336/61543instacron: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:34982025-10-22 11:55:45.411CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2
title Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2
spellingShingle Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2
Rozenberg, Marcelo Javier
Quantum Magnetism
Frustration
title_short Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2
title_full Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2
title_fullStr Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2
title_full_unstemmed Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2
title_sort Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2
dc.creator.none.fl_str_mv Rozenberg, Marcelo Javier
Chitra, R.
author Rozenberg, Marcelo Javier
author_facet Rozenberg, Marcelo Javier
Chitra, R.
author_role author
author2 Chitra, R.
author2_role author
dc.subject.none.fl_str_mv Quantum Magnetism
Frustration
topic Quantum Magnetism
Frustration
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 NMR experiments on ZnCu3(OH)6Cl2, we study the effect of nonmagnetic defects on the antiferromagnetic spin-1/2 kagome lattice. We use exact diagonalization methods to study the effect of two such defects on finite-size systems. Our results, obtained without adjustable parameters, are in good quantitative agreement with recent 17O NMR data. They provide support for the experimental interpretation of the presence of defects within the kagome layers due to Zn/Cu substitutions. Our results also show that disorder effects become relevant at lower temperatures, raising questions about the experimental evidence for the absence of an intrinsic spin gap in the kagome two-dimensional layers. ©2008 The American Physical Society.
Fil: Rozenberg, Marcelo Javier. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Chitra, R.. Laboratoire de Physique Theorique de la Matiere Condensee; Francia
description Motivated by the recent NMR experiments on ZnCu3(OH)6Cl2, we study the effect of nonmagnetic defects on the antiferromagnetic spin-1/2 kagome lattice. We use exact diagonalization methods to study the effect of two such defects on finite-size systems. Our results, obtained without adjustable parameters, are in good quantitative agreement with recent 17O NMR data. They provide support for the experimental interpretation of the presence of defects within the kagome layers due to Zn/Cu substitutions. Our results also show that disorder effects become relevant at lower temperatures, raising questions about the experimental evidence for the absence of an intrinsic spin gap in the kagome two-dimensional layers. ©2008 The American Physical Society.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
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/11336/61543
Rozenberg, Marcelo Javier; Chitra, R.; Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 78; 13; 12-2008; 132406-132409
1098-0121
CONICET Digital
CONICET
url http://hdl.handle.net/11336/61543
identifier_str_mv Rozenberg, Marcelo Javier; Chitra, R.; Disorder effects in the quantum kagome antiferromagnet ZnCu 3(OH)6Cl2; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 78; 13; 12-2008; 132406-132409
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.78.132406
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 12.982451

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