Spin relaxation rates in quasi-one-dimensional coupled quantum dots

Autores
Romano, Carla Lidia; Tamborenea, Pablo Ignacio; Ulloa, S.E.
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study theoretically the electron-spin relaxation rate in quasi-one-dimensional coupled semiconductor quantum dots. The cross-sectional confinement or shape of these nanorods can be chosen so that either the Rashba or the Dresselhaus spin-orbit coupling is present. We consider acoustic-phonon-mediated transitions between the ground state and the next two higher-energy eigenstates. These three states are nondegenerate due to the interdot coupling, which causes a symmetric-antisymmetric gap, and a competition with the Zeeman splitting. With Rashba coupling and at fixed Zeeman splitting the two upper states display an anticrossing versus interdot barrier width, which is shown to be associated with a sharp cusp in the spin relaxation rate.
Fil: Romano, Carla Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Tamborenea, Pablo Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Ulloa, S.E.. Ohio University; Estados Unidos
Materia
Spin Relaxation
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:11336/71292
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Spin relaxation rates in quasi-one-dimensional coupled quantum dotsRomano, Carla LidiaTamborenea, Pablo IgnacioUlloa, S.E.Spin RelaxationQuantum Dotshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study theoretically the electron-spin relaxation rate in quasi-one-dimensional coupled semiconductor quantum dots. The cross-sectional confinement or shape of these nanorods can be chosen so that either the Rashba or the Dresselhaus spin-orbit coupling is present. We consider acoustic-phonon-mediated transitions between the ground state and the next two higher-energy eigenstates. These three states are nondegenerate due to the interdot coupling, which causes a symmetric-antisymmetric gap, and a competition with the Zeeman splitting. With Rashba coupling and at fixed Zeeman splitting the two upper states display an anticrossing versus interdot barrier width, which is shown to be associated with a sharp cusp in the spin relaxation rate.Fil: Romano, Carla Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Tamborenea, Pablo Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Ulloa, S.E.. Ohio University; Estados UnidosAmerican Physical Society2006-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71292Romano, Carla Lidia; Tamborenea, Pablo Ignacio; Ulloa, S.E.; Spin relaxation rates in quasi-one-dimensional coupled quantum dots; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 74; 15; 12-2006; 1554331-15543351098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.74.155433info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.74.155433info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:19:11Zoai:ri.conicet.gov.ar:11336/71292instacron: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:34982025-09-29 10:19:11.249CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spin relaxation rates in quasi-one-dimensional coupled quantum dots
title Spin relaxation rates in quasi-one-dimensional coupled quantum dots
spellingShingle Spin relaxation rates in quasi-one-dimensional coupled quantum dots
Romano, Carla Lidia
Spin Relaxation
Quantum Dots
title_short Spin relaxation rates in quasi-one-dimensional coupled quantum dots
title_full Spin relaxation rates in quasi-one-dimensional coupled quantum dots
title_fullStr Spin relaxation rates in quasi-one-dimensional coupled quantum dots
title_full_unstemmed Spin relaxation rates in quasi-one-dimensional coupled quantum dots
title_sort Spin relaxation rates in quasi-one-dimensional coupled quantum dots
dc.creator.none.fl_str_mv Romano, Carla Lidia
Tamborenea, Pablo Ignacio
Ulloa, S.E.
author Romano, Carla Lidia
author_facet Romano, Carla Lidia
Tamborenea, Pablo Ignacio
Ulloa, S.E.
author_role author
author2 Tamborenea, Pablo Ignacio
Ulloa, S.E.
author2_role author
author
dc.subject.none.fl_str_mv Spin Relaxation
Quantum Dots
topic Spin Relaxation
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 study theoretically the electron-spin relaxation rate in quasi-one-dimensional coupled semiconductor quantum dots. The cross-sectional confinement or shape of these nanorods can be chosen so that either the Rashba or the Dresselhaus spin-orbit coupling is present. We consider acoustic-phonon-mediated transitions between the ground state and the next two higher-energy eigenstates. These three states are nondegenerate due to the interdot coupling, which causes a symmetric-antisymmetric gap, and a competition with the Zeeman splitting. With Rashba coupling and at fixed Zeeman splitting the two upper states display an anticrossing versus interdot barrier width, which is shown to be associated with a sharp cusp in the spin relaxation rate.
Fil: Romano, Carla Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Tamborenea, Pablo Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Ulloa, S.E.. Ohio University; Estados Unidos
description We study theoretically the electron-spin relaxation rate in quasi-one-dimensional coupled semiconductor quantum dots. The cross-sectional confinement or shape of these nanorods can be chosen so that either the Rashba or the Dresselhaus spin-orbit coupling is present. We consider acoustic-phonon-mediated transitions between the ground state and the next two higher-energy eigenstates. These three states are nondegenerate due to the interdot coupling, which causes a symmetric-antisymmetric gap, and a competition with the Zeeman splitting. With Rashba coupling and at fixed Zeeman splitting the two upper states display an anticrossing versus interdot barrier width, which is shown to be associated with a sharp cusp in the spin relaxation rate.
publishDate 2006
dc.date.none.fl_str_mv 2006-12
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/11336/71292
Romano, Carla Lidia; Tamborenea, Pablo Ignacio; Ulloa, S.E.; Spin relaxation rates in quasi-one-dimensional coupled quantum dots; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 74; 15; 12-2006; 1554331-1554335
1098-0121
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71292
identifier_str_mv Romano, Carla Lidia; Tamborenea, Pablo Ignacio; Ulloa, S.E.; Spin relaxation rates in quasi-one-dimensional coupled quantum dots; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 74; 15; 12-2006; 1554331-1554335
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/doi/10.1103/PhysRevB.74.155433
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.74.155433
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
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 13.069144

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