From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect

Autores
Choi, Deung Jang; Abufager, Paula Natalia; Limot, Laurent; Lorente, Nicolás
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A low-temperature scanning tunneling microscope was employed to study the differential conductance in an atomic junction formed by an adsorbed Co atom on a Cu(100) surface and a copper-covered tip. A zero-bias anomaly (ZBA) reveals spin scattering off the Co atom, which is assigned to a Kondo effect. The ZBA exhibits a characteristic asymmetric lineshape when electrons tunnel between tip and sample, while upon the tip-Co contact it symmetrizes and broadens. Through density functional theory calculations and the non-equilibrium non-crossing approximation, we show that the lineshape broadening is mainly a consequence of the additional coupling to the tip, while non-equilibrium effects only modify the large-bias tails of the ZBA.
Fil: Choi, Deung Jang. Université de Strasbourg; Francia
Fil: Abufager, Paula Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Limot, Laurent. Université de Strasbourg; Francia
Fil: Lorente, Nicolás. Consejo Superior de Investigaciones Científicas; España. Universidad del País Vasco. Facultad de Química Aplicada - Donostia - San Sebastián; España
Materia
Kondo
DFT
STM
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:11336/94228
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effectChoi, Deung JangAbufager, Paula NataliaLimot, LaurentLorente, NicolásKondoDFTSTMhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A low-temperature scanning tunneling microscope was employed to study the differential conductance in an atomic junction formed by an adsorbed Co atom on a Cu(100) surface and a copper-covered tip. A zero-bias anomaly (ZBA) reveals spin scattering off the Co atom, which is assigned to a Kondo effect. The ZBA exhibits a characteristic asymmetric lineshape when electrons tunnel between tip and sample, while upon the tip-Co contact it symmetrizes and broadens. Through density functional theory calculations and the non-equilibrium non-crossing approximation, we show that the lineshape broadening is mainly a consequence of the additional coupling to the tip, while non-equilibrium effects only modify the large-bias tails of the ZBA.Fil: Choi, Deung Jang. Université de Strasbourg; FranciaFil: Abufager, Paula Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Limot, Laurent. Université de Strasbourg; FranciaFil: Lorente, Nicolás. Consejo Superior de Investigaciones Científicas; España. Universidad del País Vasco. Facultad de Química Aplicada - Donostia - San Sebastián; EspañaAmerican Institute of Physics2017-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/94228Choi, Deung Jang; Abufager, Paula Natalia; Limot, Laurent; Lorente, Nicolás; From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect; American Institute of Physics; Journal of Chemical Physics; 146; 9; 3-2017; 1-9; 0923090021-9606CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1063/1.4972874info:eu-repo/semantics/altIdentifier/url/https://aip.scitation.org/doi/10.1063/1.4972874info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:07:17Zoai:ri.conicet.gov.ar:11336/94228instacron: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 11:07:17.474CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect
title From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect
spellingShingle From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect
Choi, Deung Jang
Kondo
DFT
STM
title_short From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect
title_full From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect
title_fullStr From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect
title_full_unstemmed From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect
title_sort From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect
dc.creator.none.fl_str_mv Choi, Deung Jang
Abufager, Paula Natalia
Limot, Laurent
Lorente, Nicolás
author Choi, Deung Jang
author_facet Choi, Deung Jang
Abufager, Paula Natalia
Limot, Laurent
Lorente, Nicolás
author_role author
author2 Abufager, Paula Natalia
Limot, Laurent
Lorente, Nicolás
author2_role author
author
author
dc.subject.none.fl_str_mv Kondo
DFT
STM
topic Kondo
DFT
STM
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A low-temperature scanning tunneling microscope was employed to study the differential conductance in an atomic junction formed by an adsorbed Co atom on a Cu(100) surface and a copper-covered tip. A zero-bias anomaly (ZBA) reveals spin scattering off the Co atom, which is assigned to a Kondo effect. The ZBA exhibits a characteristic asymmetric lineshape when electrons tunnel between tip and sample, while upon the tip-Co contact it symmetrizes and broadens. Through density functional theory calculations and the non-equilibrium non-crossing approximation, we show that the lineshape broadening is mainly a consequence of the additional coupling to the tip, while non-equilibrium effects only modify the large-bias tails of the ZBA.
Fil: Choi, Deung Jang. Université de Strasbourg; Francia
Fil: Abufager, Paula Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Limot, Laurent. Université de Strasbourg; Francia
Fil: Lorente, Nicolás. Consejo Superior de Investigaciones Científicas; España. Universidad del País Vasco. Facultad de Química Aplicada - Donostia - San Sebastián; España
description A low-temperature scanning tunneling microscope was employed to study the differential conductance in an atomic junction formed by an adsorbed Co atom on a Cu(100) surface and a copper-covered tip. A zero-bias anomaly (ZBA) reveals spin scattering off the Co atom, which is assigned to a Kondo effect. The ZBA exhibits a characteristic asymmetric lineshape when electrons tunnel between tip and sample, while upon the tip-Co contact it symmetrizes and broadens. Through density functional theory calculations and the non-equilibrium non-crossing approximation, we show that the lineshape broadening is mainly a consequence of the additional coupling to the tip, while non-equilibrium effects only modify the large-bias tails of the ZBA.
publishDate 2017
dc.date.none.fl_str_mv 2017-03
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/11336/94228
Choi, Deung Jang; Abufager, Paula Natalia; Limot, Laurent; Lorente, Nicolás; From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect; American Institute of Physics; Journal of Chemical Physics; 146; 9; 3-2017; 1-9; 092309
0021-9606
CONICET Digital
CONICET
url http://hdl.handle.net/11336/94228
identifier_str_mv Choi, Deung Jang; Abufager, Paula Natalia; Limot, Laurent; Lorente, Nicolás; From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect; American Institute of Physics; Journal of Chemical Physics; 146; 9; 3-2017; 1-9; 092309
0021-9606
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4972874
info:eu-repo/semantics/altIdentifier/url/https://aip.scitation.org/doi/10.1063/1.4972874
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 Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
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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