Transport through side-coupled double quantum dots: From weak to strong interdot coupling

Autores
Baines, D. Y.; Meunier, T.; Mailly, D.; Wieck, A. D.; Bäuerle, C.; Saminadayar, L.; Cornaglia de la Cruz, Pablo Sebastian; Usaj, Gonzalo; Balseiro, Carlos Antonio; Feinberg, D.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report low-temperature transport measurements through a double-quantum-dot device in a configuration where one of the quantum dots is coupled directly to the source and drain electrodes, and a second (side-coupled) quantum dot interacts electrostatically and via tunneling to the first one. As the interdot tunneling coupling increases, a crossover from weak to strong interdot tunneling is observed in the charge stability diagrams that present a complex pattern with mergings and apparent crossings of Coulomb blockade peaks. While the weak-coupling regime can be understood by considering a single level on each dot, in the intermediate- and strong-coupling regimes, the multilevel nature of the quantum dots needs to be taken into account. Surprisingly, both in the strong- and weak-coupling regimes, the double-quantum-dot states are mainly localized on each dot for most values of the parameters. Only in an intermediate-coupling regime does the device present a single dotlike molecular behavior as the molecular wave functions weight is evenly distributed between the quantum dots. At temperatures larger than the interdot coupling energy scale, a loss of coherence of the molecular states is observed.
Fil: Baines, D. Y.. Universite Joseph Fourier; Francia
Fil: Meunier, T.. Universite Joseph Fourier; Francia
Fil: Mailly, D.. Centre National de la Recherche Scientifique; Francia
Fil: Wieck, A. D.. Ruhr Universität Bochum; Alemania
Fil: Bäuerle, C.. Universite Joseph Fourier; Francia
Fil: Saminadayar, L.. Universite Joseph Fourier; Francia
Fil: Cornaglia de la Cruz, Pablo Sebastian. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Usaj, Gonzalo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Balseiro, Carlos Antonio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Feinberg, D.. Universite Joseph Fourier; Francia
Materia
electronic transport
quantum dots
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:11336/273065
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Transport through side-coupled double quantum dots: From weak to strong interdot couplingBaines, D. Y.Meunier, T.Mailly, D.Wieck, A. D.Bäuerle, C.Saminadayar, L.Cornaglia de la Cruz, Pablo SebastianUsaj, GonzaloBalseiro, Carlos AntonioFeinberg, D.electronic transportquantum dotshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report low-temperature transport measurements through a double-quantum-dot device in a configuration where one of the quantum dots is coupled directly to the source and drain electrodes, and a second (side-coupled) quantum dot interacts electrostatically and via tunneling to the first one. As the interdot tunneling coupling increases, a crossover from weak to strong interdot tunneling is observed in the charge stability diagrams that present a complex pattern with mergings and apparent crossings of Coulomb blockade peaks. While the weak-coupling regime can be understood by considering a single level on each dot, in the intermediate- and strong-coupling regimes, the multilevel nature of the quantum dots needs to be taken into account. Surprisingly, both in the strong- and weak-coupling regimes, the double-quantum-dot states are mainly localized on each dot for most values of the parameters. Only in an intermediate-coupling regime does the device present a single dotlike molecular behavior as the molecular wave functions weight is evenly distributed between the quantum dots. At temperatures larger than the interdot coupling energy scale, a loss of coherence of the molecular states is observed.Fil: Baines, D. Y.. Universite Joseph Fourier; FranciaFil: Meunier, T.. Universite Joseph Fourier; FranciaFil: Mailly, D.. Centre National de la Recherche Scientifique; FranciaFil: Wieck, A. D.. Ruhr Universität Bochum; AlemaniaFil: Bäuerle, C.. Universite Joseph Fourier; FranciaFil: Saminadayar, L.. Universite Joseph Fourier; FranciaFil: Cornaglia de la Cruz, Pablo Sebastian. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Usaj, Gonzalo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Balseiro, Carlos Antonio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Feinberg, D.. Universite Joseph Fourier; FranciaAmerican Physical Society2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/273065Baines, D. Y.; Meunier, T.; Mailly, D.; Wieck, A. D.; Bäuerle, C.; et al.; Transport through side-coupled double quantum dots: From weak to strong interdot coupling; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 85; 19; 5-2012; 1-91098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://link.aps.org/doi/10.1103/PhysRevB.85.195117info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.85.195117info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:22:24Zoai:ri.conicet.gov.ar:11336/273065instacron: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:34982025-10-15 14:22:24.756CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Transport through side-coupled double quantum dots: From weak to strong interdot coupling
title Transport through side-coupled double quantum dots: From weak to strong interdot coupling
spellingShingle Transport through side-coupled double quantum dots: From weak to strong interdot coupling
Baines, D. Y.
electronic transport
quantum dots
title_short Transport through side-coupled double quantum dots: From weak to strong interdot coupling
title_full Transport through side-coupled double quantum dots: From weak to strong interdot coupling
title_fullStr Transport through side-coupled double quantum dots: From weak to strong interdot coupling
title_full_unstemmed Transport through side-coupled double quantum dots: From weak to strong interdot coupling
title_sort Transport through side-coupled double quantum dots: From weak to strong interdot coupling
dc.creator.none.fl_str_mv Baines, D. Y.
Meunier, T.
Mailly, D.
Wieck, A. D.
Bäuerle, C.
Saminadayar, L.
Cornaglia de la Cruz, Pablo Sebastian
Usaj, Gonzalo
Balseiro, Carlos Antonio
Feinberg, D.
author Baines, D. Y.
author_facet Baines, D. Y.
Meunier, T.
Mailly, D.
Wieck, A. D.
Bäuerle, C.
Saminadayar, L.
Cornaglia de la Cruz, Pablo Sebastian
Usaj, Gonzalo
Balseiro, Carlos Antonio
Feinberg, D.
author_role author
author2 Meunier, T.
Mailly, D.
Wieck, A. D.
Bäuerle, C.
Saminadayar, L.
Cornaglia de la Cruz, Pablo Sebastian
Usaj, Gonzalo
Balseiro, Carlos Antonio
Feinberg, D.
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv electronic transport
quantum dots
topic electronic transport
quantum dots
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 report low-temperature transport measurements through a double-quantum-dot device in a configuration where one of the quantum dots is coupled directly to the source and drain electrodes, and a second (side-coupled) quantum dot interacts electrostatically and via tunneling to the first one. As the interdot tunneling coupling increases, a crossover from weak to strong interdot tunneling is observed in the charge stability diagrams that present a complex pattern with mergings and apparent crossings of Coulomb blockade peaks. While the weak-coupling regime can be understood by considering a single level on each dot, in the intermediate- and strong-coupling regimes, the multilevel nature of the quantum dots needs to be taken into account. Surprisingly, both in the strong- and weak-coupling regimes, the double-quantum-dot states are mainly localized on each dot for most values of the parameters. Only in an intermediate-coupling regime does the device present a single dotlike molecular behavior as the molecular wave functions weight is evenly distributed between the quantum dots. At temperatures larger than the interdot coupling energy scale, a loss of coherence of the molecular states is observed.
Fil: Baines, D. Y.. Universite Joseph Fourier; Francia
Fil: Meunier, T.. Universite Joseph Fourier; Francia
Fil: Mailly, D.. Centre National de la Recherche Scientifique; Francia
Fil: Wieck, A. D.. Ruhr Universität Bochum; Alemania
Fil: Bäuerle, C.. Universite Joseph Fourier; Francia
Fil: Saminadayar, L.. Universite Joseph Fourier; Francia
Fil: Cornaglia de la Cruz, Pablo Sebastian. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Usaj, Gonzalo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Balseiro, Carlos Antonio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Feinberg, D.. Universite Joseph Fourier; Francia
description We report low-temperature transport measurements through a double-quantum-dot device in a configuration where one of the quantum dots is coupled directly to the source and drain electrodes, and a second (side-coupled) quantum dot interacts electrostatically and via tunneling to the first one. As the interdot tunneling coupling increases, a crossover from weak to strong interdot tunneling is observed in the charge stability diagrams that present a complex pattern with mergings and apparent crossings of Coulomb blockade peaks. While the weak-coupling regime can be understood by considering a single level on each dot, in the intermediate- and strong-coupling regimes, the multilevel nature of the quantum dots needs to be taken into account. Surprisingly, both in the strong- and weak-coupling regimes, the double-quantum-dot states are mainly localized on each dot for most values of the parameters. Only in an intermediate-coupling regime does the device present a single dotlike molecular behavior as the molecular wave functions weight is evenly distributed between the quantum dots. At temperatures larger than the interdot coupling energy scale, a loss of coherence of the molecular states is observed.
publishDate 2012
dc.date.none.fl_str_mv 2012-05
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/11336/273065
Baines, D. Y.; Meunier, T.; Mailly, D.; Wieck, A. D.; Bäuerle, C.; et al.; Transport through side-coupled double quantum dots: From weak to strong interdot coupling; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 85; 19; 5-2012; 1-9
1098-0121
CONICET Digital
CONICET
url http://hdl.handle.net/11336/273065
identifier_str_mv Baines, D. Y.; Meunier, T.; Mailly, D.; Wieck, A. D.; Bäuerle, C.; et al.; Transport through side-coupled double quantum dots: From weak to strong interdot coupling; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 85; 19; 5-2012; 1-9
1098-0121
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://link.aps.org/doi/10.1103/PhysRevB.85.195117
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.85.195117
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
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
_version_ 1846082622937104384
score 13.22299

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