Suppression of Spin Relaxation in Submicron InGaAs Wires
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
We investigate electron spin dynamics in narrow two-dimensional n-InGaAs channels as a function of the channel width. The spin relaxation times increase with decreasing channel width, in accordance with recent theoretical predictions based on the dimensionally-constrained D'yakonov-Perel' mechanism. Surprisingly, the suppression of the relaxation rate, which is anticipated for the one-dimensional limit, is observed for widths that are an order of magnitude larger than the electron mean free path. We find the spin precession length and the channel width to be the relevant length scales for interpreting these results.
Cite
@article{arxiv.cond-mat/0602155,
title = {Suppression of Spin Relaxation in Submicron InGaAs Wires},
author = {A. W. Holleitner and V. Sih and R. C. Myers and A. C. Gossard and D. D. Awschalom},
journal= {arXiv preprint arXiv:cond-mat/0602155},
year = {2007}
}
Comments
5 pages, 4 figures