Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain

Autores
Tiegel, A. C.; Dargel, P. E.; Hallberg, Karen Astrid; Frahm, H.; Pruschke, T.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In order to study the interplay between Kondo and Ruderman-Kittel-Kasuya-Yosida interaction, we calculate the spin-spin correlation functions between two Kondo impurities coupled to different sites of a half-filled open Hubbard chain. Using the density-matrix renormalization group (DMRG), we reexamine the exponents for the power-law decay of the correlation function between the two impurity spins as a function of the antiferromagnetic coupling J , the Hubbard interaction U , and the distance R between the impurities. The exponents for finite systems obtained in this work deviate from previously published DMRG calculations. We furthermore show that the long-distance behavior of the exponents is the same for impurities coupled to the bulk or to both ends of the chain. We note that a universal exponent for the asymptotic behavior can not be extracted from these finite-size systems with open boundary conditions.
Fil: Tiegel, A. C.. Universitat of Gottingen; Alemania
Fil: Dargel, P. E.. Universitat of Gottingen; Alemania
Fil: Hallberg, Karen Astrid. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Frahm, H.. Leibniz Universität; Alemania
Fil: Pruschke, T.. Universitat of Gottingen; Alemania
Materia
Spin Spin Correlations
Kondo Impurities
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:11336/17656
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chainTiegel, A. C.Dargel, P. E.Hallberg, Karen AstridFrahm, H.Pruschke, T.Spin Spin CorrelationsKondo Impuritieshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In order to study the interplay between Kondo and Ruderman-Kittel-Kasuya-Yosida interaction, we calculate the spin-spin correlation functions between two Kondo impurities coupled to different sites of a half-filled open Hubbard chain. Using the density-matrix renormalization group (DMRG), we reexamine the exponents for the power-law decay of the correlation function between the two impurity spins as a function of the antiferromagnetic coupling J , the Hubbard interaction U , and the distance R between the impurities. The exponents for finite systems obtained in this work deviate from previously published DMRG calculations. We furthermore show that the long-distance behavior of the exponents is the same for impurities coupled to the bulk or to both ends of the chain. We note that a universal exponent for the asymptotic behavior can not be extracted from these finite-size systems with open boundary conditions.Fil: Tiegel, A. C.. Universitat of Gottingen; AlemaniaFil: Dargel, P. E.. Universitat of Gottingen; AlemaniaFil: Hallberg, Karen Astrid. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Frahm, H.. Leibniz Universität; AlemaniaFil: Pruschke, T.. Universitat of Gottingen; AlemaniaAmerican Physical Society2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17656Tiegel, A. C.; Dargel, P. E.; Hallberg, Karen Astrid; Frahm, H.; Pruschke, T.; Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain; American Physical Society; Physical Review B: Condensed Matter And Materials Physics; 87; 7; 2-2013; 1-7; 0751221098-0121enginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.87.075122info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.87.075122info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:29:49Zoai:ri.conicet.gov.ar:11336/17656instacron: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 11:29:49.99CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain
title Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain
spellingShingle Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain
Tiegel, A. C.
Spin Spin Correlations
Kondo Impurities
title_short Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain
title_full Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain
title_fullStr Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain
title_full_unstemmed Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain
title_sort Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain
dc.creator.none.fl_str_mv Tiegel, A. C.
Dargel, P. E.
Hallberg, Karen Astrid
Frahm, H.
Pruschke, T.
author Tiegel, A. C.
author_facet Tiegel, A. C.
Dargel, P. E.
Hallberg, Karen Astrid
Frahm, H.
Pruschke, T.
author_role author
author2 Dargel, P. E.
Hallberg, Karen Astrid
Frahm, H.
Pruschke, T.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Spin Spin Correlations
Kondo Impurities
topic Spin Spin Correlations
Kondo Impurities
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In order to study the interplay between Kondo and Ruderman-Kittel-Kasuya-Yosida interaction, we calculate the spin-spin correlation functions between two Kondo impurities coupled to different sites of a half-filled open Hubbard chain. Using the density-matrix renormalization group (DMRG), we reexamine the exponents for the power-law decay of the correlation function between the two impurity spins as a function of the antiferromagnetic coupling J , the Hubbard interaction U , and the distance R between the impurities. The exponents for finite systems obtained in this work deviate from previously published DMRG calculations. We furthermore show that the long-distance behavior of the exponents is the same for impurities coupled to the bulk or to both ends of the chain. We note that a universal exponent for the asymptotic behavior can not be extracted from these finite-size systems with open boundary conditions.
Fil: Tiegel, A. C.. Universitat of Gottingen; Alemania
Fil: Dargel, P. E.. Universitat of Gottingen; Alemania
Fil: Hallberg, Karen Astrid. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Frahm, H.. Leibniz Universität; Alemania
Fil: Pruschke, T.. Universitat of Gottingen; Alemania
description In order to study the interplay between Kondo and Ruderman-Kittel-Kasuya-Yosida interaction, we calculate the spin-spin correlation functions between two Kondo impurities coupled to different sites of a half-filled open Hubbard chain. Using the density-matrix renormalization group (DMRG), we reexamine the exponents for the power-law decay of the correlation function between the two impurity spins as a function of the antiferromagnetic coupling J , the Hubbard interaction U , and the distance R between the impurities. The exponents for finite systems obtained in this work deviate from previously published DMRG calculations. We furthermore show that the long-distance behavior of the exponents is the same for impurities coupled to the bulk or to both ends of the chain. We note that a universal exponent for the asymptotic behavior can not be extracted from these finite-size systems with open boundary conditions.
publishDate 2013
dc.date.none.fl_str_mv 2013-02
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/11336/17656
Tiegel, A. C.; Dargel, P. E.; Hallberg, Karen Astrid; Frahm, H.; Pruschke, T.; Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain; American Physical Society; Physical Review B: Condensed Matter And Materials Physics; 87; 7; 2-2013; 1-7; 075122
1098-0121
url http://hdl.handle.net/11336/17656
identifier_str_mv Tiegel, A. C.; Dargel, P. E.; Hallberg, Karen Astrid; Frahm, H.; Pruschke, T.; Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain; American Physical Society; Physical Review B: Condensed Matter And Materials Physics; 87; 7; 2-2013; 1-7; 075122
1098-0121
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.87.075122
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.87.075122
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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