Detection of topological transitions by transport through molecules and nanodevices

Autores
Aligia, Armando Ángel; Hallberg, Karen Astrid; Normand, B.; Kampf, A. P.
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The phase transitions of an interacting electronic system weakly coupled to free-electron which results by zero-bias conditions, were investigated. The phase transitions were expressed in terms of two effective impurity models for cases with and without spin degeneracy. The weight of first conductance peak as a function of external flux or of difference in gate voltages between even and odd sites allows to identify topological charge transition was also demonstrated using half-filled ionic Hubbard ring. The results show that conductance is expressed in terms of spectral density of an EAM, which illustrates breaking of the Kondo effect by an applied field.
Fil: Aligia, Armando Ángel. 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: Hallberg, Karen Astrid. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. 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
Fil: Normand, B.. University Of Fribourg; Suiza
Fil: Kampf, A. P.. Universität Augsburg; Alemania
Materia
TOPOLOGICAL
TRANSITIONS
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:11336/69909
Acceder
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spelling Detection of topological transitions by transport through molecules and nanodevicesAligia, Armando ÁngelHallberg, Karen AstridNormand, B.Kampf, A. P.TOPOLOGICALTRANSITIONShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The phase transitions of an interacting electronic system weakly coupled to free-electron which results by zero-bias conditions, were investigated. The phase transitions were expressed in terms of two effective impurity models for cases with and without spin degeneracy. The weight of first conductance peak as a function of external flux or of difference in gate voltages between even and odd sites allows to identify topological charge transition was also demonstrated using half-filled ionic Hubbard ring. The results show that conductance is expressed in terms of spectral density of an EAM, which illustrates breaking of the Kondo effect by an applied field.Fil: Aligia, Armando Ángel. 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: Hallberg, Karen Astrid. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. 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); ArgentinaFil: Normand, B.. University Of Fribourg; SuizaFil: Kampf, A. P.. Universität Augsburg; AlemaniaAmerican Physical Society2004-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/postscriptapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/69909Aligia, Armando Ángel; Hallberg, Karen Astrid; Normand, B.; Kampf, A. P.; Detection of topological transitions by transport through molecules and nanodevices; American Physical Society; Physical Review Letters; 93; 7; 8-2004; 1-4; 768010031-9007CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.93.076801info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.93.076801info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T10:23:43Zoai:ri.conicet.gov.ar:11336/69909instacron: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:34982025-11-05 10:23:44.287CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Detection of topological transitions by transport through molecules and nanodevices
title Detection of topological transitions by transport through molecules and nanodevices
spellingShingle Detection of topological transitions by transport through molecules and nanodevices
Aligia, Armando Ángel
TOPOLOGICAL
TRANSITIONS
title_short Detection of topological transitions by transport through molecules and nanodevices
title_full Detection of topological transitions by transport through molecules and nanodevices
title_fullStr Detection of topological transitions by transport through molecules and nanodevices
title_full_unstemmed Detection of topological transitions by transport through molecules and nanodevices
title_sort Detection of topological transitions by transport through molecules and nanodevices
dc.creator.none.fl_str_mv Aligia, Armando Ángel
Hallberg, Karen Astrid
Normand, B.
Kampf, A. P.
author Aligia, Armando Ángel
author_facet Aligia, Armando Ángel
Hallberg, Karen Astrid
Normand, B.
Kampf, A. P.
author_role author
author2 Hallberg, Karen Astrid
Normand, B.
Kampf, A. P.
author2_role author
author
author
dc.subject.none.fl_str_mv TOPOLOGICAL
TRANSITIONS
topic TOPOLOGICAL
TRANSITIONS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The phase transitions of an interacting electronic system weakly coupled to free-electron which results by zero-bias conditions, were investigated. The phase transitions were expressed in terms of two effective impurity models for cases with and without spin degeneracy. The weight of first conductance peak as a function of external flux or of difference in gate voltages between even and odd sites allows to identify topological charge transition was also demonstrated using half-filled ionic Hubbard ring. The results show that conductance is expressed in terms of spectral density of an EAM, which illustrates breaking of the Kondo effect by an applied field.
Fil: Aligia, Armando Ángel. 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: Hallberg, Karen Astrid. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. 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
Fil: Normand, B.. University Of Fribourg; Suiza
Fil: Kampf, A. P.. Universität Augsburg; Alemania
description The phase transitions of an interacting electronic system weakly coupled to free-electron which results by zero-bias conditions, were investigated. The phase transitions were expressed in terms of two effective impurity models for cases with and without spin degeneracy. The weight of first conductance peak as a function of external flux or of difference in gate voltages between even and odd sites allows to identify topological charge transition was also demonstrated using half-filled ionic Hubbard ring. The results show that conductance is expressed in terms of spectral density of an EAM, which illustrates breaking of the Kondo effect by an applied field.
publishDate 2004
dc.date.none.fl_str_mv 2004-08
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/11336/69909
Aligia, Armando Ángel; Hallberg, Karen Astrid; Normand, B.; Kampf, A. P.; Detection of topological transitions by transport through molecules and nanodevices; American Physical Society; Physical Review Letters; 93; 7; 8-2004; 1-4; 76801
0031-9007
CONICET Digital
CONICET
url http://hdl.handle.net/11336/69909
identifier_str_mv Aligia, Armando Ángel; Hallberg, Karen Astrid; Normand, B.; Kampf, A. P.; Detection of topological transitions by transport through molecules and nanodevices; American Physical Society; Physical Review Letters; 93; 7; 8-2004; 1-4; 76801
0031-9007
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://journals.aps.org/prl/abstract/10.1103/PhysRevLett.93.076801
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.93.076801
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/postscript
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 13.087074

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