Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations

Autores
Romero, Marcelo Ariel; Gómez Carrillo, C. S.; Flores, F.; Goldberg, Edith Catalina
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We describe the interaction between a transition-metal atom and a noble-metal surface by using an ionic model in which the first Hund's rule determines the filling of the atom's d levels, and spin fluctuations occur due to the electron exchange between the metal band and the atom states. We apply our model to the case of adsorbed Ti atoms on noble-metal surfaces (Ag and Au) in which conductance measurements in scanning tunneling microscope experiments suggest a mixed-valence regime according to the position and width of the atomic resonance. By introducing, in our calculation, these two parameters as extracted from the experiment, we satisfactorily reproduce the experimental results in both cases. We find, in the Ag(100) surface, that the conductance spectrum reflects electronic characteristics of the metal surface modified by the presence of the magnetic atom; whereas, in the Au(111) case, only the projected density of states on the Ti atom determines the conductance spectrum shape.
Fil: Romero, Marcelo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Gómez Carrillo, C. S.. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina
Fil: Flores, F.. Universidad Autónoma de Madrid; España
Fil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina
Materia
Strong Correlated Systems
Atom-Surfaces Interaction
Electronic Exchange
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:11336/6546
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/6546
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuationsRomero, Marcelo ArielGómez Carrillo, C. S.Flores, F.Goldberg, Edith CatalinaStrong Correlated SystemsAtom-Surfaces InteractionElectronic Exchangehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We describe the interaction between a transition-metal atom and a noble-metal surface by using an ionic model in which the first Hund's rule determines the filling of the atom's d levels, and spin fluctuations occur due to the electron exchange between the metal band and the atom states. We apply our model to the case of adsorbed Ti atoms on noble-metal surfaces (Ag and Au) in which conductance measurements in scanning tunneling microscope experiments suggest a mixed-valence regime according to the position and width of the atomic resonance. By introducing, in our calculation, these two parameters as extracted from the experiment, we satisfactorily reproduce the experimental results in both cases. We find, in the Ag(100) surface, that the conductance spectrum reflects electronic characteristics of the metal surface modified by the presence of the magnetic atom; whereas, in the Au(111) case, only the projected density of states on the Ti atom determines the conductance spectrum shape.Fil: Romero, Marcelo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: Gómez Carrillo, C. S.. Universidad Nacional del Litoral. Facultad de Ingeniería Química; ArgentinaFil: Flores, F.. Universidad Autónoma de Madrid; EspañaFil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química; ArgentinaAmerican Physical Society2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/6546Romero, Marcelo Ariel; Gómez Carrillo, C. S.; Flores, F.; Goldberg, Edith Catalina; Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 87; 19; 4-2013; 195419-1954191098-0121enginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.87.195419info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.87.195419info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:45:54Zoai:ri.conicet.gov.ar:11336/6546instacron: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 10:45:54.872CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations
title Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations
spellingShingle Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations
Romero, Marcelo Ariel
Strong Correlated Systems
Atom-Surfaces Interaction
Electronic Exchange
title_short Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations
title_full Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations
title_fullStr Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations
title_full_unstemmed Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations
title_sort Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations
dc.creator.none.fl_str_mv Romero, Marcelo Ariel
Gómez Carrillo, C. S.
Flores, F.
Goldberg, Edith Catalina
author Romero, Marcelo Ariel
author_facet Romero, Marcelo Ariel
Gómez Carrillo, C. S.
Flores, F.
Goldberg, Edith Catalina
author_role author
author2 Gómez Carrillo, C. S.
Flores, F.
Goldberg, Edith Catalina
author2_role author
author
author
dc.subject.none.fl_str_mv Strong Correlated Systems
Atom-Surfaces Interaction
Electronic Exchange
topic Strong Correlated Systems
Atom-Surfaces Interaction
Electronic Exchange
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 describe the interaction between a transition-metal atom and a noble-metal surface by using an ionic model in which the first Hund's rule determines the filling of the atom's d levels, and spin fluctuations occur due to the electron exchange between the metal band and the atom states. We apply our model to the case of adsorbed Ti atoms on noble-metal surfaces (Ag and Au) in which conductance measurements in scanning tunneling microscope experiments suggest a mixed-valence regime according to the position and width of the atomic resonance. By introducing, in our calculation, these two parameters as extracted from the experiment, we satisfactorily reproduce the experimental results in both cases. We find, in the Ag(100) surface, that the conductance spectrum reflects electronic characteristics of the metal surface modified by the presence of the magnetic atom; whereas, in the Au(111) case, only the projected density of states on the Ti atom determines the conductance spectrum shape.
Fil: Romero, Marcelo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Gómez Carrillo, C. S.. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina
Fil: Flores, F.. Universidad Autónoma de Madrid; España
Fil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina
description We describe the interaction between a transition-metal atom and a noble-metal surface by using an ionic model in which the first Hund's rule determines the filling of the atom's d levels, and spin fluctuations occur due to the electron exchange between the metal band and the atom states. We apply our model to the case of adsorbed Ti atoms on noble-metal surfaces (Ag and Au) in which conductance measurements in scanning tunneling microscope experiments suggest a mixed-valence regime according to the position and width of the atomic resonance. By introducing, in our calculation, these two parameters as extracted from the experiment, we satisfactorily reproduce the experimental results in both cases. We find, in the Ag(100) surface, that the conductance spectrum reflects electronic characteristics of the metal surface modified by the presence of the magnetic atom; whereas, in the Au(111) case, only the projected density of states on the Ti atom determines the conductance spectrum shape.
publishDate 2013
dc.date.none.fl_str_mv 2013-04
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/11336/6546
Romero, Marcelo Ariel; Gómez Carrillo, C. S.; Flores, F.; Goldberg, Edith Catalina; Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 87; 19; 4-2013; 195419-195419
1098-0121
url http://hdl.handle.net/11336/6546
identifier_str_mv Romero, Marcelo Ariel; Gómez Carrillo, C. S.; Flores, F.; Goldberg, Edith Catalina; Conductance through a Ti-atom impurity in Ag(100) and Au(111): a ionic model considering spin fluctuations; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 87; 19; 4-2013; 195419-195419
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.87.195419
info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.87.195419
info:eu-repo/semantics/altIdentifier/doi/
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 13.070432

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