Spin relaxation in the presence of electron-electron interactions
Abstract
The D'yakonov-Perel' spin relaxation induced by the spin-orbit interaction is examined in disordered two-dimensional electron gas. It is shown that, because of the electron-electron interactions different spin relaxation rates can be obtained depending on the techniques used to extract them. It is demonstrated that the relaxation rate of a spin population is proportional to the spin-diffusion constant D_s, while the spin-orbit scattering rate controlling the weak-localization corrections is proportional to the diffusion constant D, i.e., the conductivity. The two diffusion constants get strongly renormalized by the electron-electron interactions, but in different ways. As a result, the corresponding relaxation rates are different, with the difference between the two being especially strong near a magnetic instability or near the metal-insulator transition.
Keywords
Cite
@article{arxiv.cond-mat/0601105,
title = {Spin relaxation in the presence of electron-electron interactions},
author = {Alexander Punnoose and Alexander M. Finkel'stein},
journal= {arXiv preprint arXiv:cond-mat/0601105},
year = {2010}
}
Comments
To appear in Phys. Rev. Lett. (2006)