Anisotropy of spin–orbit induced electron spin relaxation in [001] and [111] grown GaAs quantum dots
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Otros documentos de la autoría: Segarra, Carlos; Planelles, Josep; Climente, Juan I.; Rajadell Viciano, Fernando
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comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
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Título
Anisotropy of spin–orbit induced electron spin relaxation in [001] and [111] grown GaAs quantum dotsFecha de publicación
2015Editor
IOP PublishingISSN
1367-2630Cita bibliográfica
SEGARRA, C., et al. Anisotropy of spin–orbit induced electron spin relaxation in [001] and [111] grown GaAs quantum dots. New Journal of Physics, 2015, vol. 17, no 3, p. 033014.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://iopscience.iop.org/article/10.1088/1367-2630/17/3/033014/metaVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
We report a systematic study of the spin relaxation anisotropy between single electron Zeeman sublevels in three-dimensional cuboidal GaAs quantum dots (QDs). The QDs are subject to an in-plane magnetic field. As the ... [+]
We report a systematic study of the spin relaxation anisotropy between single electron Zeeman sublevels in three-dimensional cuboidal GaAs quantum dots (QDs). The QDs are subject to an in-plane magnetic field. As the field orientation varies, the relaxation rate oscillates periodically, showing 'magic' angles where the relaxation rate is suppressed by several orders of magnitude. This behavior is found in QDs with different shapes, heights, crystallographic orientations and external fields. The origin of these angles can be traced back to the symmetries of the spin admixing terms of the Hamiltonian. Our results evidence that cubic Dresselhaus terms play an important role in determining the spin relaxation anisotropy, which can induce deviations of the 'magic' angles from the crystallographic directions reported in recent experiments (P Scarlino et al 2014 Phys. Rev. Lett. 113 256802). [-]
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New Journal of Physics, 2015, vol. 17, no 3Derechos de acceso
info:eu-repo/semantics/openAccess
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