1208.1284 (Peihao Huang et al.)
Peihao Huang, Xuedong Hu
We study spin relaxation of an electron in a moving quantum dot due to spin-orbit interaction and an environmental random electric potential. We find that at the lowest order, the magnetic fluctuations experienced by the spin have only components transverse to the total magnetic field, so that the motion induced spin decoherence is a pure relaxation channel. The spin relaxation rate is linearly proportional to the dot velocity. Our calculated spin relaxation time ranges from as fast as sub {\mu}s in GaAs to above ms in Si. Our results also give clear indications on how to reduce the decoherence effect of electron motion.
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http://arxiv.org/abs/1208.1284
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