Conductance through two quantum dots in a ring: Magnetic flux dependence

Mostrar todas las versiones(3)

The conductance of a double-dot system in a ring threaded by a magnetic flux is studied. The ring is connected to two leads in such a way that each dot is embedded in one arm of the structure. The currents going through each arm of the ring are determined by the Aharonov-Bohm effect and the dot char...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Apel, V.M., Davidovich, M.A., Chiappe, G., Anda, E.V.
Formato:	JOUR
Materias:	Conductance Double-dot system Magnetic flux
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_01039733_v36_n2A_p408_Apel
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_01039733_v36_n2A_p408_Apel
record_format	dspace
spelling	todo:paper_01039733_v36_n2A_p408_Apel2023-10-03T14:57:38Z Conductance through two quantum dots in a ring: Magnetic flux dependence Apel, V.M. Davidovich, M.A. Chiappe, G. Anda, E.V. Conductance Double-dot system Magnetic flux The conductance of a double-dot system in a ring threaded by a magnetic flux is studied. The ring is connected to two leads in such a way that each dot is embedded in one arm of the structure. The currents going through each arm of the ring are determined by the Aharonov-Bohm effect and the dot charging effects. The conductance for different values of the magnetic flux is obtained as a function of the gate potentials applied to the dots, for two situations: when the dot level energies are equal, ΔE = 0, and when they are different but with ΔE smaller than the Coulomb interaction U. The conductance shows quite distinct behavior according to having a finite or zero magnetic flux threading the ring. The system presents S = 1/2 and S = l Kondo phenomena for no magnetic flux and is in the S = 1/2 Kondo regime in the case of half a quantum of magnetic flux. Fil:Apel, V.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01039733_v36_n2A_p408_Apel
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Conductance Double-dot system Magnetic flux
spellingShingle	Conductance Double-dot system Magnetic flux Apel, V.M. Davidovich, M.A. Chiappe, G. Anda, E.V. Conductance through two quantum dots in a ring: Magnetic flux dependence
topic_facet	Conductance Double-dot system Magnetic flux
description	The conductance of a double-dot system in a ring threaded by a magnetic flux is studied. The ring is connected to two leads in such a way that each dot is embedded in one arm of the structure. The currents going through each arm of the ring are determined by the Aharonov-Bohm effect and the dot charging effects. The conductance for different values of the magnetic flux is obtained as a function of the gate potentials applied to the dots, for two situations: when the dot level energies are equal, ΔE = 0, and when they are different but with ΔE smaller than the Coulomb interaction U. The conductance shows quite distinct behavior according to having a finite or zero magnetic flux threading the ring. The system presents S = 1/2 and S = l Kondo phenomena for no magnetic flux and is in the S = 1/2 Kondo regime in the case of half a quantum of magnetic flux.
format	JOUR
author	Apel, V.M. Davidovich, M.A. Chiappe, G. Anda, E.V.
author_facet	Apel, V.M. Davidovich, M.A. Chiappe, G. Anda, E.V.
author_sort	Apel, V.M.
title	Conductance through two quantum dots in a ring: Magnetic flux dependence
title_short	Conductance through two quantum dots in a ring: Magnetic flux dependence
title_full	Conductance through two quantum dots in a ring: Magnetic flux dependence
title_fullStr	Conductance through two quantum dots in a ring: Magnetic flux dependence
title_full_unstemmed	Conductance through two quantum dots in a ring: Magnetic flux dependence
title_sort	conductance through two quantum dots in a ring: magnetic flux dependence
url	http://hdl.handle.net/20.500.12110/paper_01039733_v36_n2A_p408_Apel
work_keys_str_mv	AT apelvm conductancethroughtwoquantumdotsinaringmagneticfluxdependence AT davidovichma conductancethroughtwoquantumdotsinaringmagneticfluxdependence AT chiappeg conductancethroughtwoquantumdotsinaringmagneticfluxdependence AT andaev conductancethroughtwoquantumdotsinaringmagneticfluxdependence
_version_	1782028376400199680

Conductance through two quantum dots in a ring: Magnetic flux dependence

Ejemplares similares