Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevB.85.165109 http://hdl.handle.net/11449/226798 |
Resumo: | We theoretically investigate the spin-resolved local density of states (SR-LDOS) of a spin-polarized two-dimensional electron gas in the presence of a Kondo adatom and a scanning tunneling microscopy probe. Using Green's function formalism and the atomic approach in the limit of infinite Coulomb correlation, an analytical SR-LDOS expression in the low-temperature regime of the system is found. This formal result is given in terms of phase shifts originated by the adatom scattering and Fano interference. The SR-LDOS is investigated as a function of the probe position and different Fano factors. Our findings provide an alternative way to spin split the Kondo resonance without the use of huge magnetic fields, typically necessary in adatom systems characterized by large Kondo temperatures. We observe a non-Zeeman spin splitting of the Kondo resonance in the total LDOS, with one spin component pinned around the host Fermi level. Interestingly, this result is in accordance to recent experimental data. © 2012 American Physical Society. |
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Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gasWe theoretically investigate the spin-resolved local density of states (SR-LDOS) of a spin-polarized two-dimensional electron gas in the presence of a Kondo adatom and a scanning tunneling microscopy probe. Using Green's function formalism and the atomic approach in the limit of infinite Coulomb correlation, an analytical SR-LDOS expression in the low-temperature regime of the system is found. This formal result is given in terms of phase shifts originated by the adatom scattering and Fano interference. The SR-LDOS is investigated as a function of the probe position and different Fano factors. Our findings provide an alternative way to spin split the Kondo resonance without the use of huge magnetic fields, typically necessary in adatom systems characterized by large Kondo temperatures. We observe a non-Zeeman spin splitting of the Kondo resonance in the total LDOS, with one spin component pinned around the host Fermi level. Interestingly, this result is in accordance to recent experimental data. © 2012 American Physical Society.Departamento de Física e Química Universidade Estadual Paulista Júlio de Mesquita Filho, 15385-000, Ilha Solteira, SPInstituto de Física Universidade Federal Fluminense, 24210-340 Niterói, RJInstituto de Física Universidade Federal de Uberlĝndia, 38400-902, Uberlĝndia, MGDepartamento de Física e Química Universidade Estadual Paulista Júlio de Mesquita Filho, 15385-000, Ilha Solteira, SPUniversidade Estadual Paulista (UNESP)Universidade Federal Fluminense (UFF)Universidade Federal de UberlĝndiaSeridonio, A. C. [UNESP]Orahcio, F. S.Souza, F. M.Figueira, M. S.2022-04-29T02:56:11Z2022-04-29T02:56:11Z2012-04-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevB.85.165109Physical Review B - Condensed Matter and Materials Physics, v. 85, n. 16, 2012.1098-01211550-235Xhttp://hdl.handle.net/11449/22679810.1103/PhysRevB.85.1651092-s2.0-84860263693Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review B - Condensed Matter and Materials Physicsinfo:eu-repo/semantics/openAccess2024-07-10T14:07:57Zoai:repositorio.unesp.br:11449/226798Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:02:06.927519Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas |
title |
Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas |
spellingShingle |
Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas Seridonio, A. C. [UNESP] |
title_short |
Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas |
title_full |
Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas |
title_fullStr |
Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas |
title_full_unstemmed |
Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas |
title_sort |
Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas |
author |
Seridonio, A. C. [UNESP] |
author_facet |
Seridonio, A. C. [UNESP] Orahcio, F. S. Souza, F. M. Figueira, M. S. |
author_role |
author |
author2 |
Orahcio, F. S. Souza, F. M. Figueira, M. S. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Federal Fluminense (UFF) Universidade Federal de Uberlĝndia |
dc.contributor.author.fl_str_mv |
Seridonio, A. C. [UNESP] Orahcio, F. S. Souza, F. M. Figueira, M. S. |
description |
We theoretically investigate the spin-resolved local density of states (SR-LDOS) of a spin-polarized two-dimensional electron gas in the presence of a Kondo adatom and a scanning tunneling microscopy probe. Using Green's function formalism and the atomic approach in the limit of infinite Coulomb correlation, an analytical SR-LDOS expression in the low-temperature regime of the system is found. This formal result is given in terms of phase shifts originated by the adatom scattering and Fano interference. The SR-LDOS is investigated as a function of the probe position and different Fano factors. Our findings provide an alternative way to spin split the Kondo resonance without the use of huge magnetic fields, typically necessary in adatom systems characterized by large Kondo temperatures. We observe a non-Zeeman spin splitting of the Kondo resonance in the total LDOS, with one spin component pinned around the host Fermi level. Interestingly, this result is in accordance to recent experimental data. © 2012 American Physical Society. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-04-06 2022-04-29T02:56:11Z 2022-04-29T02:56:11Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevB.85.165109 Physical Review B - Condensed Matter and Materials Physics, v. 85, n. 16, 2012. 1098-0121 1550-235X http://hdl.handle.net/11449/226798 10.1103/PhysRevB.85.165109 2-s2.0-84860263693 |
url |
http://dx.doi.org/10.1103/PhysRevB.85.165109 http://hdl.handle.net/11449/226798 |
identifier_str_mv |
Physical Review B - Condensed Matter and Materials Physics, v. 85, n. 16, 2012. 1098-0121 1550-235X 10.1103/PhysRevB.85.165109 2-s2.0-84860263693 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review B - Condensed Matter and Materials Physics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129276523839488 |