Spin filters with Fano dots

Autores
Torio, Maria Eugenia; Hallberg, Karen Astrid; Flach, S.; Miroshnichenko, A. E.; Titov, M.
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We compute the zero bias conductance of electrons through a single ballistic channel weakly coupled to a side quantum dot with Coulomb interaction. In contrast to the standard setup which is designed to measure the transport through the dot, the channel conductance reveals Coulomb blockade dips rather then peaks due to the Fano-like backscattering. At zero temperature the Kondo effect leads to the formation of broad valleys of small conductance corresponding to an odd number of electrons on the dot. By applying a magnetic field in the dot region we find two dips corresponding to a total suppression in the conductance of spins up and down separated by an energy of the order of the Coulomb interaction. This provides a possibility of a perfect spin filter.
Fil: Torio, Maria Eugenia. 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: Hallberg, Karen Astrid. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Flach, S.. Max Planck Institute For The Physics Of Complex Systems; Alemania
Fil: Miroshnichenko, A. E.. Max Planck Institute For The Physics Of Complex Systems; Alemania
Fil: Titov, M.. Max Planck Institute For The Physics Of Complex Systems; Alemania
Materia
Spin
Filters
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:11336/70020
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Spin filters with Fano dotsTorio, Maria EugeniaHallberg, Karen AstridFlach, S.Miroshnichenko, A. E.Titov, M.SpinFiltershttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We compute the zero bias conductance of electrons through a single ballistic channel weakly coupled to a side quantum dot with Coulomb interaction. In contrast to the standard setup which is designed to measure the transport through the dot, the channel conductance reveals Coulomb blockade dips rather then peaks due to the Fano-like backscattering. At zero temperature the Kondo effect leads to the formation of broad valleys of small conductance corresponding to an odd number of electrons on the dot. By applying a magnetic field in the dot region we find two dips corresponding to a total suppression in the conductance of spins up and down separated by an energy of the order of the Coulomb interaction. This provides a possibility of a perfect spin filter.Fil: Torio, Maria Eugenia. 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: Hallberg, Karen Astrid. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Flach, S.. Max Planck Institute For The Physics Of Complex Systems; AlemaniaFil: Miroshnichenko, A. E.. Max Planck Institute For The Physics Of Complex Systems; AlemaniaFil: Titov, M.. Max Planck Institute For The Physics Of Complex Systems; AlemaniaSpringer2004-02info: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/11336/70020Torio, Maria Eugenia; Hallberg, Karen Astrid; Flach, S.; Miroshnichenko, A. E.; Titov, M.; Spin filters with Fano dots; Springer; European Physical Journal B - Condensed Matter; 37; 3; 2-2004; 399-4031434-6028CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1140/epjb/e2004-00072-6info:eu-repo/semantics/altIdentifier/doi/10.1140/epjb/e2004-00072-6info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/cond-mat/0401552info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:06:00Zoai:ri.conicet.gov.ar:11336/70020instacron: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 11:06:00.623CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spin filters with Fano dots
title Spin filters with Fano dots
spellingShingle Spin filters with Fano dots
Torio, Maria Eugenia
Spin
Filters
title_short Spin filters with Fano dots
title_full Spin filters with Fano dots
title_fullStr Spin filters with Fano dots
title_full_unstemmed Spin filters with Fano dots
title_sort Spin filters with Fano dots
dc.creator.none.fl_str_mv Torio, Maria Eugenia
Hallberg, Karen Astrid
Flach, S.
Miroshnichenko, A. E.
Titov, M.
author Torio, Maria Eugenia
author_facet Torio, Maria Eugenia
Hallberg, Karen Astrid
Flach, S.
Miroshnichenko, A. E.
Titov, M.
author_role author
author2 Hallberg, Karen Astrid
Flach, S.
Miroshnichenko, A. E.
Titov, M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Spin
Filters
topic Spin
Filters
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 compute the zero bias conductance of electrons through a single ballistic channel weakly coupled to a side quantum dot with Coulomb interaction. In contrast to the standard setup which is designed to measure the transport through the dot, the channel conductance reveals Coulomb blockade dips rather then peaks due to the Fano-like backscattering. At zero temperature the Kondo effect leads to the formation of broad valleys of small conductance corresponding to an odd number of electrons on the dot. By applying a magnetic field in the dot region we find two dips corresponding to a total suppression in the conductance of spins up and down separated by an energy of the order of the Coulomb interaction. This provides a possibility of a perfect spin filter.
Fil: Torio, Maria Eugenia. 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: Hallberg, Karen Astrid. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Flach, S.. Max Planck Institute For The Physics Of Complex Systems; Alemania
Fil: Miroshnichenko, A. E.. Max Planck Institute For The Physics Of Complex Systems; Alemania
Fil: Titov, M.. Max Planck Institute For The Physics Of Complex Systems; Alemania
description We compute the zero bias conductance of electrons through a single ballistic channel weakly coupled to a side quantum dot with Coulomb interaction. In contrast to the standard setup which is designed to measure the transport through the dot, the channel conductance reveals Coulomb blockade dips rather then peaks due to the Fano-like backscattering. At zero temperature the Kondo effect leads to the formation of broad valleys of small conductance corresponding to an odd number of electrons on the dot. By applying a magnetic field in the dot region we find two dips corresponding to a total suppression in the conductance of spins up and down separated by an energy of the order of the Coulomb interaction. This provides a possibility of a perfect spin filter.
publishDate 2004
dc.date.none.fl_str_mv 2004-02
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/11336/70020
Torio, Maria Eugenia; Hallberg, Karen Astrid; Flach, S.; Miroshnichenko, A. E.; Titov, M.; Spin filters with Fano dots; Springer; European Physical Journal B - Condensed Matter; 37; 3; 2-2004; 399-403
1434-6028
CONICET Digital
CONICET
url http://hdl.handle.net/11336/70020
identifier_str_mv Torio, Maria Eugenia; Hallberg, Karen Astrid; Flach, S.; Miroshnichenko, A. E.; Titov, M.; Spin filters with Fano dots; Springer; European Physical Journal B - Condensed Matter; 37; 3; 2-2004; 399-403
1434-6028
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.springer.com/article/10.1140/epjb/e2004-00072-6
info:eu-repo/semantics/altIdentifier/doi/10.1140/epjb/e2004-00072-6
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/cond-mat/0401552
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 Springer
publisher.none.fl_str_mv Springer
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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