Spin excitations of weakly coupled magnetic atoms

Autores
Goldberg, Edith Catalina; Flores, F.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Atheoretical description of the measured differential conductance through magnetic atoms on a Cu2N/Cu(100) substrate is presented [Otte et al., Phys. Rev. Lett. 103, 107203 (2009)]. In particular, we analyze the case of a weakly coupled Co/ Fe dimer. The starting point of our model is an ionic Hamiltonian which describes the inelastic electron tunneling excitations and the Kondo resonances as due to atomic spin fluctuations associated with electron cotunneling processes in the tip-atom-surface system. The interaction terms of this Hamiltonian are written in the basis set of the eigenstates of the atomic part, which in the present case includes the crystalline and Zeeman fields and also, a Heisenberg exchange coupling between the two spins. The appropriate Green?s functions that define the differential conductance spectra are calculated by means of the equation-of-motion method.We obtain, in this form, a very satisfactory description of the overall experimental findings related to the behavior of the spin state excitations and Kondo resonance structures in the presence of an applied magnetic field.
Fil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Física del Litoral; Argentina
Fil: Flores, F.. Universidad Autónoma de Madrid. Departamento Física Teórica de la Materia Condensada; España
Materia
Kondo
Magnetic Atoms
Exchange Coupling
Inelastic Tunneling
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:11336/4421
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/4421
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Spin excitations of weakly coupled magnetic atomsGoldberg, Edith CatalinaFlores, F.KondoMagnetic AtomsExchange CouplingInelastic Tunnelinghttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Atheoretical description of the measured differential conductance through magnetic atoms on a Cu2N/Cu(100) substrate is presented [Otte et al., Phys. Rev. Lett. 103, 107203 (2009)]. In particular, we analyze the case of a weakly coupled Co/ Fe dimer. The starting point of our model is an ionic Hamiltonian which describes the inelastic electron tunneling excitations and the Kondo resonances as due to atomic spin fluctuations associated with electron cotunneling processes in the tip-atom-surface system. The interaction terms of this Hamiltonian are written in the basis set of the eigenstates of the atomic part, which in the present case includes the crystalline and Zeeman fields and also, a Heisenberg exchange coupling between the two spins. The appropriate Green?s functions that define the differential conductance spectra are calculated by means of the equation-of-motion method.We obtain, in this form, a very satisfactory description of the overall experimental findings related to the behavior of the spin state excitations and Kondo resonance structures in the presence of an applied magnetic field.Fil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Física del Litoral; ArgentinaFil: Flores, F.. Universidad Autónoma de Madrid. Departamento Física Teórica de la Materia Condensada; EspañaAmerican Physical Society2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4421Goldberg, Edith Catalina; Flores, F.; Spin excitations of weakly coupled magnetic atoms; American Physical Society; Physical Review B; 91; 16; 4-2015; 165408-1654080163-1829enginfo:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.165408info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.91.165408info:eu-repo/semantics/altIdentifier/issn/0163-1829info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:18:52Zoai:ri.conicet.gov.ar:11336/4421instacron: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 13:18:53.017CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spin excitations of weakly coupled magnetic atoms
title Spin excitations of weakly coupled magnetic atoms
spellingShingle Spin excitations of weakly coupled magnetic atoms
Goldberg, Edith Catalina
Kondo
Magnetic Atoms
Exchange Coupling
Inelastic Tunneling
title_short Spin excitations of weakly coupled magnetic atoms
title_full Spin excitations of weakly coupled magnetic atoms
title_fullStr Spin excitations of weakly coupled magnetic atoms
title_full_unstemmed Spin excitations of weakly coupled magnetic atoms
title_sort Spin excitations of weakly coupled magnetic atoms
dc.creator.none.fl_str_mv Goldberg, Edith Catalina
Flores, F.
author Goldberg, Edith Catalina
author_facet Goldberg, Edith Catalina
Flores, F.
author_role author
author2 Flores, F.
author2_role author
dc.subject.none.fl_str_mv Kondo
Magnetic Atoms
Exchange Coupling
Inelastic Tunneling
topic Kondo
Magnetic Atoms
Exchange Coupling
Inelastic Tunneling
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Atheoretical description of the measured differential conductance through magnetic atoms on a Cu2N/Cu(100) substrate is presented [Otte et al., Phys. Rev. Lett. 103, 107203 (2009)]. In particular, we analyze the case of a weakly coupled Co/ Fe dimer. The starting point of our model is an ionic Hamiltonian which describes the inelastic electron tunneling excitations and the Kondo resonances as due to atomic spin fluctuations associated with electron cotunneling processes in the tip-atom-surface system. The interaction terms of this Hamiltonian are written in the basis set of the eigenstates of the atomic part, which in the present case includes the crystalline and Zeeman fields and also, a Heisenberg exchange coupling between the two spins. The appropriate Green?s functions that define the differential conductance spectra are calculated by means of the equation-of-motion method.We obtain, in this form, a very satisfactory description of the overall experimental findings related to the behavior of the spin state excitations and Kondo resonance structures in the presence of an applied magnetic field.
Fil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Física del Litoral; Argentina
Fil: Flores, F.. Universidad Autónoma de Madrid. Departamento Física Teórica de la Materia Condensada; España
description Atheoretical description of the measured differential conductance through magnetic atoms on a Cu2N/Cu(100) substrate is presented [Otte et al., Phys. Rev. Lett. 103, 107203 (2009)]. In particular, we analyze the case of a weakly coupled Co/ Fe dimer. The starting point of our model is an ionic Hamiltonian which describes the inelastic electron tunneling excitations and the Kondo resonances as due to atomic spin fluctuations associated with electron cotunneling processes in the tip-atom-surface system. The interaction terms of this Hamiltonian are written in the basis set of the eigenstates of the atomic part, which in the present case includes the crystalline and Zeeman fields and also, a Heisenberg exchange coupling between the two spins. The appropriate Green?s functions that define the differential conductance spectra are calculated by means of the equation-of-motion method.We obtain, in this form, a very satisfactory description of the overall experimental findings related to the behavior of the spin state excitations and Kondo resonance structures in the presence of an applied magnetic field.
publishDate 2015
dc.date.none.fl_str_mv 2015-04
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/11336/4421
Goldberg, Edith Catalina; Flores, F.; Spin excitations of weakly coupled magnetic atoms; American Physical Society; Physical Review B; 91; 16; 4-2015; 165408-165408
0163-1829
url http://hdl.handle.net/11336/4421
identifier_str_mv Goldberg, Edith Catalina; Flores, F.; Spin excitations of weakly coupled magnetic atoms; American Physical Society; Physical Review B; 91; 16; 4-2015; 165408-165408
0163-1829
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.91.165408
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.91.165408
info:eu-repo/semantics/altIdentifier/issn/0163-1829
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 12.48226

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