Semiclassical path integral approach on spin relaxations in narrow wires
Abstract
The semiclassical path integral method has been applied for studying spin relaxation in a narrow 2D strip with the Rashba spin-orbit interaction. Our numerical calculations show a good agreement with the experimental data, although some features of experimental results are not clear yet. We also calculated the relaxation of a uniform spin-density distribution in the ballistic regime of very narrow wires. With the decreasing wire width, the spin polarization exhibits a transition from the exponential decay to the oscillatory Bessel-like relaxation. The SPI method has been also employed to calculate the relaxation of the particularly long-lived helix mode. A good agreement has been found with calculations based on the diffusion theory.
Cite
@article{arxiv.0902.2828,
title = {Semiclassical path integral approach on spin relaxations in narrow wires},
author = {Cheng-Hung Chang and Jengjan Tsai and Hui-Fen Lo and A. G. Mal'shukov},
journal= {arXiv preprint arXiv:0902.2828},
year = {2009}
}
Comments
8 pages, 6 figures (to appear in Phys. Rev. B)