Rashba coupling in quantum dots: exact solution
Strongly Correlated Electrons
2009-11-10 v2
Abstract
We present an analytic solution to the problem of the Rashba spin-orbit coupling in semiconductor quantum dots. We calculate the exact energy spectrum, wave-functions, and spin--flip relaxation times. We discuss various effects inaccessible via perturbation theory. In particular, we find that the effective gyromagnetic ratio is strongly suppressed by the spin-orbit coupling. The spin-flip relaxation rate has a maximum as a function of the spin-orbit coupling and is therefore suppressed in both the weak- and strong coupling limits.
Cite
@article{arxiv.cond-mat/0310024,
title = {Rashba coupling in quantum dots: exact solution},
author = {E. Tsitsishvili and G. S. Lozano and A. O. Gogolin},
journal= {arXiv preprint arXiv:cond-mat/0310024},
year = {2009}
}
Comments
5 pages, 4 figs, reference added