Influence of spin waves on transport through a quantum-dot spin valve
Mesoscale and Nanoscale Physics
2010-11-15 v2
Abstract
We study the influence of spin waves on transport through a single-level quantum dot weakly coupled to ferromagnetic electrodes with noncollinear magnetizations. Side peaks appear in the differential conductance due to emission and absorption of spin waves. We, furthermore, investigate the nonequilibrium magnon distributions generated in the source and drain lead. In addition, we show how magnon-assisted tunneling can generate a fullly spin-polarized current without an applied transport voltage. We discuss the influence of spin waves on the current noise. Finally, we show how the magnonic contributions to the exchange field can be detected in the finite-frequency Fano factor.
Keywords
Cite
@article{arxiv.1008.0948,
title = {Influence of spin waves on transport through a quantum-dot spin valve},
author = {Björn Sothmann and Jürgen König and Anatoli Kadigrobov},
journal= {arXiv preprint arXiv:1008.0948},
year = {2010}
}
Comments
published version, 15 pages, 10 figures