Heat current across a capacitively coupled double quantum dot

Autores
Aligia, Armando Angel; Perez Daroca, Diego Raul; Arrachea, Liliana del Carmen; Roura Bas, Pablo Gines
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the heat current through two capacitively coupled quantum dots coupled in series with two conducting leads at different temperatures T L and T R in the spinless case (valid for a high applied magnetic field). Our results are also valid for the heat current through a single quantum dot with strongly ferromagnetic leads pointing in opposite directions (so that the electrons with given spin at the dot can jump only to one lead) or through a quantum dot with two degenerate levels with destructive quantum interference and high magnetic field. Although the charge current is always zero, the heat current is finite when the interdot Coulomb repulsion U is taken into account due to many-body effects. We study the thermal conductance as a function of temperature and the dependence of the thermal current with the couplings to the leads, T L − T R , energy levels of the dots and U , including conditions for which an orbital Kondo regime takes place. When the energy levels of the dots are different, the device has rectifying properties for the thermal current. We find that the ratio between the thermal current resulting from a thermal bias T L > T R and the one from T L < T R is maximized for particular values of the energy levels, one above and the other below the Fermi level.
Fil: Aligia, Armando Angel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Perez Daroca, Diego Raul. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia de Investigación y Aplicaciones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Arrachea, Liliana del Carmen. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Roura Bas, Pablo Gines. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Materia
heat
kondo
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:11336/126828
Acceder
id CONICETDig_c1a77c2adedc07266a5b8de34908e203
oai_identifier_str oai:ri.conicet.gov.ar:11336/126828
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Heat current across a capacitively coupled double quantum dotAligia, Armando AngelPerez Daroca, Diego RaulArrachea, Liliana del CarmenRoura Bas, Pablo Ginesheatkondohttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the heat current through two capacitively coupled quantum dots coupled in series with two conducting leads at different temperatures T L and T R in the spinless case (valid for a high applied magnetic field). Our results are also valid for the heat current through a single quantum dot with strongly ferromagnetic leads pointing in opposite directions (so that the electrons with given spin at the dot can jump only to one lead) or through a quantum dot with two degenerate levels with destructive quantum interference and high magnetic field. Although the charge current is always zero, the heat current is finite when the interdot Coulomb repulsion U is taken into account due to many-body effects. We study the thermal conductance as a function of temperature and the dependence of the thermal current with the couplings to the leads, T L − T R , energy levels of the dots and U , including conditions for which an orbital Kondo regime takes place. When the energy levels of the dots are different, the device has rectifying properties for the thermal current. We find that the ratio between the thermal current resulting from a thermal bias T L > T R and the one from T L < T R is maximized for particular values of the energy levels, one above and the other below the Fermi level.Fil: Aligia, Armando Angel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Perez Daroca, Diego Raul. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia de Investigación y Aplicaciones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Arrachea, Liliana del Carmen. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Roura Bas, Pablo Gines. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaAmerican Physical Society2020-02-14info: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/11336/126828Aligia, Armando Angel; Perez Daroca, Diego Raul; Arrachea, Liliana del Carmen; Roura Bas, Pablo Gines; Heat current across a capacitively coupled double quantum dot; American Physical Society; Physical Review B; 101; 075417; 14-2-2020; 1-161098-01212469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.101.075417info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.101.075417info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1909.08670v2info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:22:49Zoai:ri.conicet.gov.ar:11336/126828instacron: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 14:22:49.684CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Heat current across a capacitively coupled double quantum dot
title Heat current across a capacitively coupled double quantum dot
spellingShingle Heat current across a capacitively coupled double quantum dot
Aligia, Armando Angel
heat
kondo
title_short Heat current across a capacitively coupled double quantum dot
title_full Heat current across a capacitively coupled double quantum dot
title_fullStr Heat current across a capacitively coupled double quantum dot
title_full_unstemmed Heat current across a capacitively coupled double quantum dot
title_sort Heat current across a capacitively coupled double quantum dot
dc.creator.none.fl_str_mv Aligia, Armando Angel
Perez Daroca, Diego Raul
Arrachea, Liliana del Carmen
Roura Bas, Pablo Gines
author Aligia, Armando Angel
author_facet Aligia, Armando Angel
Perez Daroca, Diego Raul
Arrachea, Liliana del Carmen
Roura Bas, Pablo Gines
author_role author
author2 Perez Daroca, Diego Raul
Arrachea, Liliana del Carmen
Roura Bas, Pablo Gines
author2_role author
author
author
dc.subject.none.fl_str_mv heat
kondo
topic heat
kondo
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 study the heat current through two capacitively coupled quantum dots coupled in series with two conducting leads at different temperatures T L and T R in the spinless case (valid for a high applied magnetic field). Our results are also valid for the heat current through a single quantum dot with strongly ferromagnetic leads pointing in opposite directions (so that the electrons with given spin at the dot can jump only to one lead) or through a quantum dot with two degenerate levels with destructive quantum interference and high magnetic field. Although the charge current is always zero, the heat current is finite when the interdot Coulomb repulsion U is taken into account due to many-body effects. We study the thermal conductance as a function of temperature and the dependence of the thermal current with the couplings to the leads, T L − T R , energy levels of the dots and U , including conditions for which an orbital Kondo regime takes place. When the energy levels of the dots are different, the device has rectifying properties for the thermal current. We find that the ratio between the thermal current resulting from a thermal bias T L > T R and the one from T L < T R is maximized for particular values of the energy levels, one above and the other below the Fermi level.
Fil: Aligia, Armando Angel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Perez Daroca, Diego Raul. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia de Investigación y Aplicaciones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Arrachea, Liliana del Carmen. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Roura Bas, Pablo Gines. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
description We study the heat current through two capacitively coupled quantum dots coupled in series with two conducting leads at different temperatures T L and T R in the spinless case (valid for a high applied magnetic field). Our results are also valid for the heat current through a single quantum dot with strongly ferromagnetic leads pointing in opposite directions (so that the electrons with given spin at the dot can jump only to one lead) or through a quantum dot with two degenerate levels with destructive quantum interference and high magnetic field. Although the charge current is always zero, the heat current is finite when the interdot Coulomb repulsion U is taken into account due to many-body effects. We study the thermal conductance as a function of temperature and the dependence of the thermal current with the couplings to the leads, T L − T R , energy levels of the dots and U , including conditions for which an orbital Kondo regime takes place. When the energy levels of the dots are different, the device has rectifying properties for the thermal current. We find that the ratio between the thermal current resulting from a thermal bias T L > T R and the one from T L < T R is maximized for particular values of the energy levels, one above and the other below the Fermi level.
publishDate 2020
dc.date.none.fl_str_mv 2020-02-14
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/11336/126828
Aligia, Armando Angel; Perez Daroca, Diego Raul; Arrachea, Liliana del Carmen; Roura Bas, Pablo Gines; Heat current across a capacitively coupled double quantum dot; American Physical Society; Physical Review B; 101; 075417; 14-2-2020; 1-16
1098-0121
2469-9969
CONICET Digital
CONICET
url http://hdl.handle.net/11336/126828
identifier_str_mv Aligia, Armando Angel; Perez Daroca, Diego Raul; Arrachea, Liliana del Carmen; Roura Bas, Pablo Gines; Heat current across a capacitively coupled double quantum dot; American Physical Society; Physical Review B; 101; 075417; 14-2-2020; 1-16
1098-0121
2469-9969
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/prb/abstract/10.1103/PhysRevB.101.075417
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.101.075417
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1909.08670v2
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_ 1846082629826248704
score 13.22299

Publicaciones similares