Spin current generation and detection by a double quantum dot structure
Mesoscale and Nanoscale Physics
2010-03-18 v1 Strongly Correlated Electrons
Abstract
We propose a device acting as a spin valve which is based on a double quantum dot structure with parallel topology. Using the exact analytical solution for the noninteracting case we argue that, at a certain constellation of system parameters and externally applied fields, the electric current through the constriction can become almost fully spin-polarized. We discuss the influence of the coupling asymmetry, finite temperatures and interactions on the efficiency of the device and make predictions for the experimental realization of the effect.
Cite
@article{arxiv.0909.2762,
title = {Spin current generation and detection by a double quantum dot structure},
author = {J. P. Dahlhaus and S. Maier and A. Komnik},
journal= {arXiv preprint arXiv:0909.2762},
year = {2010}
}
Comments
5 pages, 5 figures (eps)