Pure spin-current generated by reflection at a normal metal/2DEG interface
Abstract
The concept of a spin-current is a useful tool in understanding spin-transport in hybrid systems, but its very definition is problematic in systems where spin-orbit coupling effects are strong. In the absence of spin-dependent scattering, the spin-current remains well-defined. We here propose a method for generating pure spin-currents in a normal metal where the spin-current consequently does not suffer from the aforementioned problems pertaining to its very definition or spin-relaxation processes. More specifically, we show how an unpolarized incident charge-current can induce a pure transverse spin-current by means of scattering at a normal metal/2DEG interface. This occurs for both Rashba and Dresselhaus spin-orbit coupling. An experimental setup for observation of this effect is proposed.
Keywords
Cite
@article{arxiv.0906.1581,
title = {Pure spin-current generated by reflection at a normal metal/2DEG interface},
author = {Jacob Linder and Takehito Yokoyama and Asle Sudbø},
journal= {arXiv preprint arXiv:0906.1581},
year = {2015}
}
Comments
8 pages, 7 figures. Accepted for publication in Phys. Rev. B