Spin current diode based on an electron waveguide with spin-orbit interaction
Mesoscale and Nanoscale Physics
2009-11-13 v1 Materials Science
Abstract
We propose a spin current diode which can work even in a small applied bias condition (the linear-response regime). The prototypal device consists of a hornlike electron waveguide with Rashba spin-orbit interaction, which is connected to two leads with different widths. It is demonstrated that when electrons are incident from the narrow lead, the generated spin conductance fluctuates around a constant value in a wide range of incident energy. When the transport direction is reversed, the spin conductance is suppressed strongly. Such a remarkable difference arises from spin-flipped transitions caused by the spin-orbit interaction.
Cite
@article{arxiv.0805.1106,
title = {Spin current diode based on an electron waveguide with spin-orbit interaction},
author = {F. Zhai and K. Chang and H. Q. Xu},
journal= {arXiv preprint arXiv:0805.1106},
year = {2009}
}
Comments
3 pages, 2 figures