Non-fermi-liquid behavior in transport through co-doped Au Chains

Autores
Di Napoli, Solange Mariel; Weichselbaum, A.; Roura Bas, Pablo Gines; Aligia, Armando Ángel; Mokrousov, Y.; Blügel, S.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We calculate the conductance as a function of temperature G ( T ) through Au monatomic chains containing one Co atom as a magnetic impurity, and connected to two conducting leads with a fourfold symmetry axis. Using the information derived from ab initio calculations, we construct an effective model ˆ H eff that hybridizes a 3 d 7 quadruplet at the Co site with two 3 d 8 triplets through the hopping of 5 d x z and 5 d y z electrons of Au. The quadruplet is split by spin anisotropy due to spin-orbit coupling. Solving ˆ H eff with the numerical renormalization group we find that at low temperatures G ( T ) = a − b √ T and the ground state impurity entropy is ln  ( 2 ) / 2 , a behavior similar to the two-channel Kondo model. Stretching the chain leads to a non-Kondo phase, with the physics of the underscreened Kondo model at the quantum critical point.
Fil: Di Napoli, Solange Mariel. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Weichselbaum, A.. Ludwig Maximilians Universitat; Alemania
Fil: Roura Bas, Pablo Gines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Aligia, Armando Ángel. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Mokrousov, Y.. Helmholtz Gemeinschaft. Forschungszentrum Jülich; Alemania
Fil: Blügel, S.. Helmholtz Gemeinschaft. Forschungszentrum Jülich; Alemania
Materia
Kondo physics
Numerical Renormalization Group
ab initio electronic structure
Atomic chains
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:11336/21170
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Non-fermi-liquid behavior in transport through co-doped Au ChainsDi Napoli, Solange MarielWeichselbaum, A.Roura Bas, Pablo GinesAligia, Armando ÁngelMokrousov, Y.Blügel, S.Kondo physicsNumerical Renormalization Groupab initio electronic structureAtomic chainshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We calculate the conductance as a function of temperature G ( T ) through Au monatomic chains containing one Co atom as a magnetic impurity, and connected to two conducting leads with a fourfold symmetry axis. Using the information derived from ab initio calculations, we construct an effective model ˆ H eff that hybridizes a 3 d 7 quadruplet at the Co site with two 3 d 8 triplets through the hopping of 5 d x z and 5 d y z electrons of Au. The quadruplet is split by spin anisotropy due to spin-orbit coupling. Solving ˆ H eff with the numerical renormalization group we find that at low temperatures G ( T ) = a − b √ T and the ground state impurity entropy is ln  ( 2 ) / 2 , a behavior similar to the two-channel Kondo model. Stretching the chain leads to a non-Kondo phase, with the physics of the underscreened Kondo model at the quantum critical point.Fil: Di Napoli, Solange Mariel. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Weichselbaum, A.. Ludwig Maximilians Universitat; AlemaniaFil: Roura Bas, Pablo Gines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: Aligia, Armando Ángel. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mokrousov, Y.. Helmholtz Gemeinschaft. Forschungszentrum Jülich; AlemaniaFil: Blügel, S.. Helmholtz Gemeinschaft. Forschungszentrum Jülich; AlemaniaAmerican Physical Society2013-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21170Di Napoli, Solange Mariel; Weichselbaum, A.; Roura Bas, Pablo Gines; Aligia, Armando Ángel; Mokrousov, Y.; et al.; Non-fermi-liquid behavior in transport through co-doped Au Chains; American Physical Society; Physical Review Letters; 110; 19; 5-2013; 1964021-19640250031-9007CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.196402info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.110.196402info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1405.1011info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:15:11Zoai:ri.conicet.gov.ar:11336/21170instacron: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:34982025-09-10 13:15:12.215CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Non-fermi-liquid behavior in transport through co-doped Au Chains
title Non-fermi-liquid behavior in transport through co-doped Au Chains
spellingShingle Non-fermi-liquid behavior in transport through co-doped Au Chains
Di Napoli, Solange Mariel
Kondo physics
Numerical Renormalization Group
ab initio electronic structure
Atomic chains
title_short Non-fermi-liquid behavior in transport through co-doped Au Chains
title_full Non-fermi-liquid behavior in transport through co-doped Au Chains
title_fullStr Non-fermi-liquid behavior in transport through co-doped Au Chains
title_full_unstemmed Non-fermi-liquid behavior in transport through co-doped Au Chains
title_sort Non-fermi-liquid behavior in transport through co-doped Au Chains
dc.creator.none.fl_str_mv Di Napoli, Solange Mariel
Weichselbaum, A.
Roura Bas, Pablo Gines
Aligia, Armando Ángel
Mokrousov, Y.
Blügel, S.
author Di Napoli, Solange Mariel
author_facet Di Napoli, Solange Mariel
Weichselbaum, A.
Roura Bas, Pablo Gines
Aligia, Armando Ángel
Mokrousov, Y.
Blügel, S.
author_role author
author2 Weichselbaum, A.
Roura Bas, Pablo Gines
Aligia, Armando Ángel
Mokrousov, Y.
Blügel, S.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Kondo physics
Numerical Renormalization Group
ab initio electronic structure
Atomic chains
topic Kondo physics
Numerical Renormalization Group
ab initio electronic structure
Atomic chains
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 calculate the conductance as a function of temperature G ( T ) through Au monatomic chains containing one Co atom as a magnetic impurity, and connected to two conducting leads with a fourfold symmetry axis. Using the information derived from ab initio calculations, we construct an effective model ˆ H eff that hybridizes a 3 d 7 quadruplet at the Co site with two 3 d 8 triplets through the hopping of 5 d x z and 5 d y z electrons of Au. The quadruplet is split by spin anisotropy due to spin-orbit coupling. Solving ˆ H eff with the numerical renormalization group we find that at low temperatures G ( T ) = a − b √ T and the ground state impurity entropy is ln  ( 2 ) / 2 , a behavior similar to the two-channel Kondo model. Stretching the chain leads to a non-Kondo phase, with the physics of the underscreened Kondo model at the quantum critical point.
Fil: Di Napoli, Solange Mariel. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Weichselbaum, A.. Ludwig Maximilians Universitat; Alemania
Fil: Roura Bas, Pablo Gines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Aligia, Armando Ángel. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Mokrousov, Y.. Helmholtz Gemeinschaft. Forschungszentrum Jülich; Alemania
Fil: Blügel, S.. Helmholtz Gemeinschaft. Forschungszentrum Jülich; Alemania
description We calculate the conductance as a function of temperature G ( T ) through Au monatomic chains containing one Co atom as a magnetic impurity, and connected to two conducting leads with a fourfold symmetry axis. Using the information derived from ab initio calculations, we construct an effective model ˆ H eff that hybridizes a 3 d 7 quadruplet at the Co site with two 3 d 8 triplets through the hopping of 5 d x z and 5 d y z electrons of Au. The quadruplet is split by spin anisotropy due to spin-orbit coupling. Solving ˆ H eff with the numerical renormalization group we find that at low temperatures G ( T ) = a − b √ T and the ground state impurity entropy is ln  ( 2 ) / 2 , a behavior similar to the two-channel Kondo model. Stretching the chain leads to a non-Kondo phase, with the physics of the underscreened Kondo model at the quantum critical point.
publishDate 2013
dc.date.none.fl_str_mv 2013-05
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/11336/21170
Di Napoli, Solange Mariel; Weichselbaum, A.; Roura Bas, Pablo Gines; Aligia, Armando Ángel; Mokrousov, Y.; et al.; Non-fermi-liquid behavior in transport through co-doped Au Chains; American Physical Society; Physical Review Letters; 110; 19; 5-2013; 1964021-1964025
0031-9007
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21170
identifier_str_mv Di Napoli, Solange Mariel; Weichselbaum, A.; Roura Bas, Pablo Gines; Aligia, Armando Ángel; Mokrousov, Y.; et al.; Non-fermi-liquid behavior in transport through co-doped Au Chains; American Physical Society; Physical Review Letters; 110; 19; 5-2013; 1964021-1964025
0031-9007
CONICET Digital
CONICET
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/prl/abstract/10.1103/PhysRevLett.110.196402
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.110.196402
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1405.1011
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
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
_version_ 1842980817730535424
score 12.993085

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