Spin-dependent (magneto)transport through a ring due to spin-orbit interaction
Abstract
Electron transport through a one-dimensional ring connected with two external leads, in the presence of spin-orbit interaction (SOI) of strength \alpha and a perpendicular magnetic field is studied. Applying Griffith's boundary conditions we derive analytic expressions for the reflection and transmission coefficients of the corresponding one-electron scattering problem. We generalize earlier conductance results by Nitta et al. [Appl. Phys. Lett. 75, 695 (1999)] and investigate the influence of \alpha, temperature, and a weak magnetic field on the conductance. Varying \alpha and temperature changes the position of the minima and maxima of the magnetic-field dependent conductance, and it may even convert a maximum into a minimum and vice versa.
Cite
@article{arxiv.cond-mat/0407540,
title = {Spin-dependent (magneto)transport through a ring due to spin-orbit interaction},
author = {B. Molnar and F. M. Peeters and P. Vasilopoulos},
journal= {arXiv preprint arXiv:cond-mat/0407540},
year = {2009}
}
Comments
19 pages, 9 figures