Spin relaxation in semiconductor quantum dots

Details Spin relaxation in semiconductor quantum dots Spin relaxation in semiconductor quantum dots

1999-07-23

arxiv.org/abs/cond-mat/9907367v1

Phys. Rev. B, v.61, 12639 (2000).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, RevTex

Scientific paper

10.1103/PhysRevB.61.12639

We have studied the physical processes responsible for the spin -flip in GaAs quantum dots. We have calculated the rates for different mechanisms which are related to spin-orbit coupling and cause a spin-flip during the inelastic relaxation of the electron in the dot both with and without a magnetic field. We have shown that the zero-dimensional character of the problem when electron wave functions are localized in all directions leads to freezing out of the most effective spin-flip mechanisms related to the absence of the inversion centers in the elementary crystal cell and at the heterointerface and, as a result, to unusually low spin-flip rates.

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