Singlet-triplet transition in a quantum dot: Effect on mesoscopic transport

The T = 0 transport properties of a wire interacting with a lateral two-level quantum dot are studied by using an exact numerical calculation. The wire conductance, the spin-spin correlation and the Kondo temperature are obtained as a function of the dot level energy spacing. When the dot has two el...

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Autores principales: Davidovich, M.A., Anda, E.V., Büsser, C.A., Chiappe, G.
Formato: JOUR
Materias:
Kondo effect
Quantuam dot
Algorithms
Correlation methods
Electric conductance
Electric wire
Electron transport properties
Electrons
Hamiltonians
Quenching
Semiconductor quantum dots
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09214526_v320_n1-4_p366_Davidovich
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09214526_v320_n1-4_p366_Davidovich
record_format dspace
spelling todo:paper_09214526_v320_n1-4_p366_Davidovich2023-10-03T15:45:08Z Singlet-triplet transition in a quantum dot: Effect on mesoscopic transport Davidovich, M.A. Anda, E.V. Büsser, C.A. Chiappe, G. Kondo effect Quantuam dot Algorithms Correlation methods Electric conductance Electric wire Electron transport properties Electrons Hamiltonians Quenching Kondo effect Semiconductor quantum dots The T = 0 transport properties of a wire interacting with a lateral two-level quantum dot are studied by using an exact numerical calculation. The wire conductance, the spin-spin correlation and the Kondo temperature are obtained as a function of the dot level energy spacing. When the dot has two electrons and spin SD ∼ 1, the wire current is totally quenched by the S = 1 Kondo effect. The Kondo temperature is maximum at the singlet-triplet transition and its dependence upon the dot energy spacing follows a non-universal scaling law. © 2002 Elsevier Science B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09214526_v320_n1-4_p366_Davidovich
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Kondo effect
Quantuam dot
Algorithms
Correlation methods
Electric conductance
Electric wire
Electron transport properties
Electrons
Hamiltonians
Quenching
Kondo effect
Semiconductor quantum dots
spellingShingle Kondo effect
Quantuam dot
Algorithms
Correlation methods
Electric conductance
Electric wire
Electron transport properties
Electrons
Hamiltonians
Quenching
Kondo effect
Semiconductor quantum dots
Davidovich, M.A.
Anda, E.V.
Büsser, C.A.
Chiappe, G.
Singlet-triplet transition in a quantum dot: Effect on mesoscopic transport
topic_facet Kondo effect
Quantuam dot
Algorithms
Correlation methods
Electric conductance
Electric wire
Electron transport properties
Electrons
Hamiltonians
Quenching
Kondo effect
Semiconductor quantum dots
description The T = 0 transport properties of a wire interacting with a lateral two-level quantum dot are studied by using an exact numerical calculation. The wire conductance, the spin-spin correlation and the Kondo temperature are obtained as a function of the dot level energy spacing. When the dot has two electrons and spin SD ∼ 1, the wire current is totally quenched by the S = 1 Kondo effect. The Kondo temperature is maximum at the singlet-triplet transition and its dependence upon the dot energy spacing follows a non-universal scaling law. © 2002 Elsevier Science B.V. All rights reserved.
format JOUR
author Davidovich, M.A.
Anda, E.V.
Büsser, C.A.
Chiappe, G.
author_facet Davidovich, M.A.
Anda, E.V.
Büsser, C.A.
Chiappe, G.
author_sort Davidovich, M.A.
title Singlet-triplet transition in a quantum dot: Effect on mesoscopic transport
title_short Singlet-triplet transition in a quantum dot: Effect on mesoscopic transport
title_full Singlet-triplet transition in a quantum dot: Effect on mesoscopic transport
title_fullStr Singlet-triplet transition in a quantum dot: Effect on mesoscopic transport
title_full_unstemmed Singlet-triplet transition in a quantum dot: Effect on mesoscopic transport
title_sort singlet-triplet transition in a quantum dot: effect on mesoscopic transport
url http://hdl.handle.net/20.500.12110/paper_09214526_v320_n1-4_p366_Davidovich
work_keys_str_mv AT davidovichma singlettriplettransitioninaquantumdoteffectonmesoscopictransport
AT andaev singlettriplettransitioninaquantumdoteffectonmesoscopictransport
AT busserca singlettriplettransitioninaquantumdoteffectonmesoscopictransport
AT chiappeg singlettriplettransitioninaquantumdoteffectonmesoscopictransport
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