Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains

Autores
Gazza, Claudio; Dobry, Ariel; Cabra, Daniel Carlos; Vekua, T.
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the magnetic excitations on top of the plateaux states recently discovered in spin-Peierls systems in a magnetic field. We show by means of extensive density matrix renormalization group (DMRG) computations and an analytic approach that one single spin-flip on top of M = 1-2/N (N=3,4,…) plateau decays into N elementary excitations each carrying a fraction 1/N of the spin. This fractionalization goes beyond the well-known decay of one magnon into two spinons taking place on top of the M=0 plateau. Concentrating on the 1/3 plateau (N=3) we unravel the microscopic structure of the domain walls which carry fractional spin-1/3, both from theory and numerics. These excitations are shown to be noninteracting and should be observable in x-ray and nuclear magnetic resonance experiments.
Departamento de Física
Materia
Ciencias Exactas
Física
spin-Peierls systems
magnetic field
density matrix renormalization group
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:10915/126409
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/126409
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chainsGazza, ClaudioDobry, ArielCabra, Daniel CarlosVekua, T.Ciencias ExactasFísicaspin-Peierls systemsmagnetic fielddensity matrix renormalization groupWe study the magnetic excitations on top of the plateaux states recently discovered in spin-Peierls systems in a magnetic field. We show by means of extensive density matrix renormalization group (DMRG) computations and an analytic approach that one single spin-flip on top of M = 1-2/N (N=3,4,…) plateau decays into N elementary excitations each carrying a fraction 1/N of the spin. This fractionalization goes beyond the well-known decay of one magnon into two spinons taking place on top of the M=0 plateau. Concentrating on the 1/3 plateau (N=3) we unravel the microscopic structure of the domain walls which carry fractional spin-1/3, both from theory and numerics. These excitations are shown to be noninteracting and should be observable in x-ray and nuclear magnetic resonance experiments.Departamento de Física2007-04-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/126409enginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.75.165104info:eu-repo/semantics/altIdentifier/issn/1098-0121info:eu-repo/semantics/altIdentifier/issn/1550-235xinfo:eu-repo/semantics/altIdentifier/arxiv/cond-mat/0608326info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevb.75.165104info: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:UNLP2026-02-12T16:13:36Zoai:sedici.unlp.edu.ar:10915/126409Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-02-12 16:13:37.135SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains
title Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains
spellingShingle Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains
Gazza, Claudio
Ciencias Exactas
Física
spin-Peierls systems
magnetic field
density matrix renormalization group
title_short Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains
title_full Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains
title_fullStr Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains
title_full_unstemmed Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains
title_sort Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains
dc.creator.none.fl_str_mv Gazza, Claudio
Dobry, Ariel
Cabra, Daniel Carlos
Vekua, T.
author Gazza, Claudio
author_facet Gazza, Claudio
Dobry, Ariel
Cabra, Daniel Carlos
Vekua, T.
author_role author
author2 Dobry, Ariel
Cabra, Daniel Carlos
Vekua, T.
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
spin-Peierls systems
magnetic field
density matrix renormalization group
topic Ciencias Exactas
Física
spin-Peierls systems
magnetic field
density matrix renormalization group
dc.description.none.fl_txt_mv We study the magnetic excitations on top of the plateaux states recently discovered in spin-Peierls systems in a magnetic field. We show by means of extensive density matrix renormalization group (DMRG) computations and an analytic approach that one single spin-flip on top of M = 1-2/N (N=3,4,…) plateau decays into N elementary excitations each carrying a fraction 1/N of the spin. This fractionalization goes beyond the well-known decay of one magnon into two spinons taking place on top of the M=0 plateau. Concentrating on the 1/3 plateau (N=3) we unravel the microscopic structure of the domain walls which carry fractional spin-1/3, both from theory and numerics. These excitations are shown to be noninteracting and should be observable in x-ray and nuclear magnetic resonance experiments.
Departamento de Física
description We study the magnetic excitations on top of the plateaux states recently discovered in spin-Peierls systems in a magnetic field. We show by means of extensive density matrix renormalization group (DMRG) computations and an analytic approach that one single spin-flip on top of M = 1-2/N (N=3,4,…) plateau decays into N elementary excitations each carrying a fraction 1/N of the spin. This fractionalization goes beyond the well-known decay of one magnon into two spinons taking place on top of the M=0 plateau. Concentrating on the 1/3 plateau (N=3) we unravel the microscopic structure of the domain walls which carry fractional spin-1/3, both from theory and numerics. These excitations are shown to be noninteracting and should be observable in x-ray and nuclear magnetic resonance experiments.
publishDate 2007
dc.date.none.fl_str_mv 2007-04-10
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/10915/126409
url http://sedici.unlp.edu.ar/handle/10915/126409
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.75.165104
info:eu-repo/semantics/altIdentifier/issn/1098-0121
info:eu-repo/semantics/altIdentifier/issn/1550-235x
info:eu-repo/semantics/altIdentifier/arxiv/cond-mat/0608326
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevb.75.165104
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)
dc.format.none.fl_str_mv application/pdf
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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score 12.930639

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