Anisotropy of Spin Splitting and Spin Relaxation in Lateral Quantum Dots

Falko, Vladimir I. and Altshuler, B. L. and Tsyplyatyev, O. (2005) Anisotropy of Spin Splitting and Spin Relaxation in Lateral Quantum Dots. Physical review letters, 95 (7): 076603. ISSN 1079-7114

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Abstract

Inelastic spin relaxation and spin splitting s in lateral quantum dots are studied in the regime of strong in-plane magnetic field. Because of both the g-factor energy dependence and spin-orbit coupling, s demonstrates a substantial nonlinear magnetic field dependence similar to that observed by Hanson et al. [Phys. Rev. Lett. 91, 196802 (2003)]. It also varies with the in-plane orientation of the magnetic field due to crystalline anisotropy of the spin-orbit coupling. The spin relaxation rate is also anisotropic, the anisotropy increasing with the field. When the magnetic length is less than the "thickness" of the GaAs dot, the relaxation can be an order of magnitude faster for B||[100] than for B||[110].

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
Our prediction that inelastic spin relaxation and spin splitting in lateral GaAs/AlGaAs quantum dots have a nonlinear magnetic field dependence and pronounced anisotropy (with respect to the in-plane orientation of a magnetic field) resulted in a collaboration with Marcus at Harvard. RAE_import_type : Journal article RAE_uoa_type : Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3100
Subjects:
?? semiconductor quantum dotsiii-v semiconductorsgallium arsenideg-factorspin-orbit interactionsmagnetoelectronicsgeneral physics and astronomyphysics and astronomy(all)qc physics ??
ID Code:
2362
Deposited By:
Deposited On:
01 Apr 2008 15:35
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Jul 2024 08:26