Orbital Kondo effect in V-doped 1T-CrSe2

Autores
Nuñez, Matias; Freitas, Daniele C.; Gay, Frédérique; Marcus, Jacques; Strobel, Pierre; Aligia, Armando Ángel; Núñez Regueiro, Manuel
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We have studied the resistance of 1T-CrSe2, as the Cr atoms are substituted by V or Ti. The V replacement leads to a logarithmic increase in the resistance as the temperature is lowered, proportional to the V concentration. While this behavior is consistent with the Kondo effect, the weak dependence of the resistance with magnetic field and the fact that the system has antiferromagnetic order, rule out a Kondo effect due to spin degeneracy. In contrast to the case of V, Ti substitution does not increase the logarithmic term while application of pressure destroys it. Calculations of the electronic structure within the framework of density functional theory, maximally localized Wannier functions, and many-body calculations in a cluster containing a Cr or V atom and its six nearest-neighbor Se atoms, helped to reveal the existence of an orbital Kondo effect due to orbital degeneracy in the V substitutional impurities.
Fil: Nuñez, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Universidad Nacional de Cuyo; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnología Nuclear. Gerencia de Investigación Aplicada. Grupo de Materiales Nucleares; Argentina
Fil: Freitas, Daniele C.. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
Fil: Gay, Frédérique. Universite Grenoble Alpes; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Marcus, Jacques. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
Fil: Strobel, Pierre. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
Fil: Aligia, Armando Ángel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Núñez Regueiro, Manuel. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
Materia
Orbital Kondo effect
1T-CrSe2
Many-body calculations
Maximally localized Wannier functions
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:11336/180693
Acceder
id CONICETDig_a13964e308940f126b0461c7363bcd06
oai_identifier_str oai:ri.conicet.gov.ar:11336/180693
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Orbital Kondo effect in V-doped 1T-CrSe2Nuñez, MatiasFreitas, Daniele C.Gay, FrédériqueMarcus, JacquesStrobel, PierreAligia, Armando ÁngelNúñez Regueiro, ManuelOrbital Kondo effect1T-CrSe2Many-body calculationsMaximally localized Wannier functionshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We have studied the resistance of 1T-CrSe2, as the Cr atoms are substituted by V or Ti. The V replacement leads to a logarithmic increase in the resistance as the temperature is lowered, proportional to the V concentration. While this behavior is consistent with the Kondo effect, the weak dependence of the resistance with magnetic field and the fact that the system has antiferromagnetic order, rule out a Kondo effect due to spin degeneracy. In contrast to the case of V, Ti substitution does not increase the logarithmic term while application of pressure destroys it. Calculations of the electronic structure within the framework of density functional theory, maximally localized Wannier functions, and many-body calculations in a cluster containing a Cr or V atom and its six nearest-neighbor Se atoms, helped to reveal the existence of an orbital Kondo effect due to orbital degeneracy in the V substitutional impurities.Fil: Nuñez, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Universidad Nacional de Cuyo; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnología Nuclear. Gerencia de Investigación Aplicada. Grupo de Materiales Nucleares; ArgentinaFil: Freitas, Daniele C.. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; FranciaFil: Gay, Frédérique. Universite Grenoble Alpes; Francia. Centre National de la Recherche Scientifique; FranciaFil: Marcus, Jacques. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; FranciaFil: Strobel, Pierre. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; FranciaFil: Aligia, Armando Ángel. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Núñez Regueiro, Manuel. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; FranciaAmerican Physical Society2013-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/180693Nuñez, Matias; Freitas, Daniele C.; Gay, Frédérique; Marcus, Jacques; Strobel, Pierre; et al.; Orbital Kondo effect in V-doped 1T-CrSe2; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 88; 24; 12-2013; 1-111098-01211550-235XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.88.245129info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.88.245129info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:08:48Zoai:ri.conicet.gov.ar:11336/180693instacron: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:34982025-09-03 10:08:49.165CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Orbital Kondo effect in V-doped 1T-CrSe2
title Orbital Kondo effect in V-doped 1T-CrSe2
spellingShingle Orbital Kondo effect in V-doped 1T-CrSe2
Nuñez, Matias
Orbital Kondo effect
1T-CrSe2
Many-body calculations
Maximally localized Wannier functions
title_short Orbital Kondo effect in V-doped 1T-CrSe2
title_full Orbital Kondo effect in V-doped 1T-CrSe2
title_fullStr Orbital Kondo effect in V-doped 1T-CrSe2
title_full_unstemmed Orbital Kondo effect in V-doped 1T-CrSe2
title_sort Orbital Kondo effect in V-doped 1T-CrSe2
dc.creator.none.fl_str_mv Nuñez, Matias
Freitas, Daniele C.
Gay, Frédérique
Marcus, Jacques
Strobel, Pierre
Aligia, Armando Ángel
Núñez Regueiro, Manuel
author Nuñez, Matias
author_facet Nuñez, Matias
Freitas, Daniele C.
Gay, Frédérique
Marcus, Jacques
Strobel, Pierre
Aligia, Armando Ángel
Núñez Regueiro, Manuel
author_role author
author2 Freitas, Daniele C.
Gay, Frédérique
Marcus, Jacques
Strobel, Pierre
Aligia, Armando Ángel
Núñez Regueiro, Manuel
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Orbital Kondo effect
1T-CrSe2
Many-body calculations
Maximally localized Wannier functions
topic Orbital Kondo effect
1T-CrSe2
Many-body calculations
Maximally localized Wannier functions
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 have studied the resistance of 1T-CrSe2, as the Cr atoms are substituted by V or Ti. The V replacement leads to a logarithmic increase in the resistance as the temperature is lowered, proportional to the V concentration. While this behavior is consistent with the Kondo effect, the weak dependence of the resistance with magnetic field and the fact that the system has antiferromagnetic order, rule out a Kondo effect due to spin degeneracy. In contrast to the case of V, Ti substitution does not increase the logarithmic term while application of pressure destroys it. Calculations of the electronic structure within the framework of density functional theory, maximally localized Wannier functions, and many-body calculations in a cluster containing a Cr or V atom and its six nearest-neighbor Se atoms, helped to reveal the existence of an orbital Kondo effect due to orbital degeneracy in the V substitutional impurities.
Fil: Nuñez, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Universidad Nacional de Cuyo; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnología Nuclear. Gerencia de Investigación Aplicada. Grupo de Materiales Nucleares; Argentina
Fil: Freitas, Daniele C.. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
Fil: Gay, Frédérique. Universite Grenoble Alpes; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Marcus, Jacques. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
Fil: Strobel, Pierre. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
Fil: Aligia, Armando Ángel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Núñez Regueiro, Manuel. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
description We have studied the resistance of 1T-CrSe2, as the Cr atoms are substituted by V or Ti. The V replacement leads to a logarithmic increase in the resistance as the temperature is lowered, proportional to the V concentration. While this behavior is consistent with the Kondo effect, the weak dependence of the resistance with magnetic field and the fact that the system has antiferromagnetic order, rule out a Kondo effect due to spin degeneracy. In contrast to the case of V, Ti substitution does not increase the logarithmic term while application of pressure destroys it. Calculations of the electronic structure within the framework of density functional theory, maximally localized Wannier functions, and many-body calculations in a cluster containing a Cr or V atom and its six nearest-neighbor Se atoms, helped to reveal the existence of an orbital Kondo effect due to orbital degeneracy in the V substitutional impurities.
publishDate 2013
dc.date.none.fl_str_mv 2013-12
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/11336/180693
Nuñez, Matias; Freitas, Daniele C.; Gay, Frédérique; Marcus, Jacques; Strobel, Pierre; et al.; Orbital Kondo effect in V-doped 1T-CrSe2; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 88; 24; 12-2013; 1-11
1098-0121
1550-235X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/180693
identifier_str_mv Nuñez, Matias; Freitas, Daniele C.; Gay, Frédérique; Marcus, Jacques; Strobel, Pierre; et al.; Orbital Kondo effect in V-doped 1T-CrSe2; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 88; 24; 12-2013; 1-11
1098-0121
1550-235X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.88.245129
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.88.245129
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
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_ 1842270058534928384
score 13.13397

Publicaciones similares