Cotunneling current through quantum dots with phonon-assisted spin-flip processes
Mesoscale and Nanoscale Physics
2007-05-23 v2
Abstract
We consider cotunneling through a quantum dot in the presence of spin-flip processes induced by the coupling to acoustic phonons of the surrounding. An expression for the phonon-assisted cotunneling current is derived by means of a generalized Schrieffer-Wolff transformation. The influence of the spin-phonon coupling on the heating of the dot is considered. The result is evaluated for the case of a parabolic semiconductor quantum dot with Rashba and Dresselhaus spin-orbit coupling and a method for the determination of the spin-phonon relaxation rate is proposed.
Cite
@article{arxiv.cond-mat/0509420,
title = {Cotunneling current through quantum dots with phonon-assisted spin-flip processes},
author = {Jörg Lehmann and Daniel Loss},
journal= {arXiv preprint arXiv:cond-mat/0509420},
year = {2007}
}
Comments
11 pages, 6 figures. Minor changes: typos corrected and references added. Version accepted for publication in Phys. Rev. B