Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level
- Autores
- Fernández, Joaquín; Roura Bas, Pablo Gines
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We study the role of the onset of Shockley states Ds belonging to (111) surfaces of Cu, Ag, and Au in the Kondo effect when a magnetic impurity is deposited on them. When Ds approaches the Fermi level EF, which can be done by compressing (stretching) the metallic sample, we find that most of the thermodynamic and dynamic properties of the impurity are affected in a nontrivial way. We model the system by a generic Anderson impurity model and solve it by using the numerical renormalization group technique. In particular, the impurity contribution to magnetic susceptibility and entropy as a function of temperature exhibit negative values and go to zero slowly in a logarithmic shape. Furthermore, we found suppression of the spectral density weight at the Fermi level when Ds∼EF even in the Kondo regime. As a consequence, the conductance through the impurity is strongly reduced by nearly 25% of the unitary value 2e2/h. Finally, we analyze these features in realistic systems like Co on Ag(111) reported in the literature.
Fil: Fernández, Joaquín. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Roura Bas, Pablo Gines. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina - Materia
-
surface states
magnetic impurity
Kondo
NRG - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/123503
Ver los metadatos del registro completo
id |
CONICETDig_7965b28f424e19006b1e3f988e4fa6a4 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/123503 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi levelFernández, JoaquínRoura Bas, Pablo Ginessurface statesmagnetic impurityKondoNRGhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the role of the onset of Shockley states Ds belonging to (111) surfaces of Cu, Ag, and Au in the Kondo effect when a magnetic impurity is deposited on them. When Ds approaches the Fermi level EF, which can be done by compressing (stretching) the metallic sample, we find that most of the thermodynamic and dynamic properties of the impurity are affected in a nontrivial way. We model the system by a generic Anderson impurity model and solve it by using the numerical renormalization group technique. In particular, the impurity contribution to magnetic susceptibility and entropy as a function of temperature exhibit negative values and go to zero slowly in a logarithmic shape. Furthermore, we found suppression of the spectral density weight at the Fermi level when Ds∼EF even in the Kondo regime. As a consequence, the conductance through the impurity is strongly reduced by nearly 25% of the unitary value 2e2/h. Finally, we analyze these features in realistic systems like Co on Ag(111) reported in the literature.Fil: Fernández, Joaquín. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Roura Bas, Pablo Gines. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaAmerican Physical Society2019-10info: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/11336/123503Fernández, Joaquín; Roura Bas, Pablo Gines; Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level; American Physical Society; Physical Review B; 100; 16; 10-2019; 165139-1651502469-99502469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevB.100.165139info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.100.165139info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:55:38Zoai:ri.conicet.gov.ar:11336/123503instacron: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:34982025-09-29 09:55:38.759CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level |
title |
Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level |
spellingShingle |
Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level Fernández, Joaquín surface states magnetic impurity Kondo NRG |
title_short |
Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level |
title_full |
Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level |
title_fullStr |
Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level |
title_full_unstemmed |
Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level |
title_sort |
Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level |
dc.creator.none.fl_str_mv |
Fernández, Joaquín Roura Bas, Pablo Gines |
author |
Fernández, Joaquín |
author_facet |
Fernández, Joaquín Roura Bas, Pablo Gines |
author_role |
author |
author2 |
Roura Bas, Pablo Gines |
author2_role |
author |
dc.subject.none.fl_str_mv |
surface states magnetic impurity Kondo NRG |
topic |
surface states magnetic impurity Kondo NRG |
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 study the role of the onset of Shockley states Ds belonging to (111) surfaces of Cu, Ag, and Au in the Kondo effect when a magnetic impurity is deposited on them. When Ds approaches the Fermi level EF, which can be done by compressing (stretching) the metallic sample, we find that most of the thermodynamic and dynamic properties of the impurity are affected in a nontrivial way. We model the system by a generic Anderson impurity model and solve it by using the numerical renormalization group technique. In particular, the impurity contribution to magnetic susceptibility and entropy as a function of temperature exhibit negative values and go to zero slowly in a logarithmic shape. Furthermore, we found suppression of the spectral density weight at the Fermi level when Ds∼EF even in the Kondo regime. As a consequence, the conductance through the impurity is strongly reduced by nearly 25% of the unitary value 2e2/h. Finally, we analyze these features in realistic systems like Co on Ag(111) reported in the literature. Fil: Fernández, Joaquín. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina Fil: Roura Bas, Pablo Gines. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina |
description |
We study the role of the onset of Shockley states Ds belonging to (111) surfaces of Cu, Ag, and Au in the Kondo effect when a magnetic impurity is deposited on them. When Ds approaches the Fermi level EF, which can be done by compressing (stretching) the metallic sample, we find that most of the thermodynamic and dynamic properties of the impurity are affected in a nontrivial way. We model the system by a generic Anderson impurity model and solve it by using the numerical renormalization group technique. In particular, the impurity contribution to magnetic susceptibility and entropy as a function of temperature exhibit negative values and go to zero slowly in a logarithmic shape. Furthermore, we found suppression of the spectral density weight at the Fermi level when Ds∼EF even in the Kondo regime. As a consequence, the conductance through the impurity is strongly reduced by nearly 25% of the unitary value 2e2/h. Finally, we analyze these features in realistic systems like Co on Ag(111) reported in the literature. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10 |
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/11336/123503 Fernández, Joaquín; Roura Bas, Pablo Gines; Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level; American Physical Society; Physical Review B; 100; 16; 10-2019; 165139-165150 2469-9950 2469-9969 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/123503 |
identifier_str_mv |
Fernández, Joaquín; Roura Bas, Pablo Gines; Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level; American Physical Society; Physical Review B; 100; 16; 10-2019; 165139-165150 2469-9950 2469-9969 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://link.aps.org/doi/10.1103/PhysRevB.100.165139 info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.100.165139 |
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_ |
1844613675964432384 |
score |
13.070432 |