Spin splitting and precession in quantum dots with spin-orbit coupling: The role of spatial deformation

7 pages, 8 figures.-- PACS nr.: 73.21.La.-- ArXiv pre-print available at: http://arxiv.org/abs/cond-mat/0305648

Detalhes bibliográficos
Autores: Valín-Rodríguez, Manuel, Puente, Antonio, Serra, Llorenç
Tipo de documento: artigo
Data de publicação:2004
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/7525
Acesso em linha:http://hdl.handle.net/10261/7525
Access Level:Acceso aberto
Palavra-chave:[PACS] Quantum dots
[PACS] Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems
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spelling Spin splitting and precession in quantum dots with spin-orbit coupling: The role of spatial deformationValín-Rodríguez, ManuelPuente, AntonioSerra, Llorenç[PACS] Quantum dots[PACS] Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems7 pages, 8 figures.-- PACS nr.: 73.21.La.-- ArXiv pre-print available at: http://arxiv.org/abs/cond-mat/0305648Extending a previous work on spin precession in GaAs/AlGaAs quantum dots with spin-orbit coupling, we study the role of deformation in the external confinement. Small elliptical deformations are enough to alter the precessional characteristics at low magnetic fields. We obtain approximate expressions for the modified g factor including weak Rashba and Dresselhaus spin-orbit terms. For more intense couplings numerical calculations are performed. We also study the influence of the magnetic field orientation on the spin splitting and the related anisotropy of the g factor. Spin-orbit coupling effects can reproduce the experimental spin-splittings reported by Hanson et al. [Phys. Rev. Lett. 91, 196802 (2003)] for a one-electron dot. For dots containing more electrons, Coulomb interaction effects are estimated within the local-spin-density approximation, showing that many features of the non-iteracting system are qualitatively preserved.This work was supported by Grant No. BFM2002-03241 from DGI (Spain).Peer reviewedAmerican Physical Society200820082004info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_65012373 bytes1465337 bytestext/plainapplication/pdfhttp://hdl.handle.net/10261/7525reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1103/PhysRevB.69.085306info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/75252026-05-22T06:33:51Z
dc.title.none.fl_str_mv Spin splitting and precession in quantum dots with spin-orbit coupling: The role of spatial deformation
title Spin splitting and precession in quantum dots with spin-orbit coupling: The role of spatial deformation
spellingShingle Spin splitting and precession in quantum dots with spin-orbit coupling: The role of spatial deformation
Valín-Rodríguez, Manuel
[PACS] Quantum dots
[PACS] Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems
title_short Spin splitting and precession in quantum dots with spin-orbit coupling: The role of spatial deformation
title_full Spin splitting and precession in quantum dots with spin-orbit coupling: The role of spatial deformation
title_fullStr Spin splitting and precession in quantum dots with spin-orbit coupling: The role of spatial deformation
title_full_unstemmed Spin splitting and precession in quantum dots with spin-orbit coupling: The role of spatial deformation
title_sort Spin splitting and precession in quantum dots with spin-orbit coupling: The role of spatial deformation
dc.creator.none.fl_str_mv Valín-Rodríguez, Manuel
Puente, Antonio
Serra, Llorenç
author Valín-Rodríguez, Manuel
author_facet Valín-Rodríguez, Manuel
Puente, Antonio
Serra, Llorenç
author_role author
author2 Puente, Antonio
Serra, Llorenç
author2_role author
author
dc.subject.none.fl_str_mv [PACS] Quantum dots
[PACS] Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems
topic [PACS] Quantum dots
[PACS] Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems
description 7 pages, 8 figures.-- PACS nr.: 73.21.La.-- ArXiv pre-print available at: http://arxiv.org/abs/cond-mat/0305648
publishDate 2004
dc.date.none.fl_str_mv 2004
2008
2008
dc.type.none.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/7525
url http://hdl.handle.net/10261/7525
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1103/PhysRevB.69.085306
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 2373 bytes
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dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
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