Edge-induced spin polarization in two-dimensional electron gas

Bokes, P. and Horvath, F. (2010) Edge-induced spin polarization in two-dimensional electron gas. Physical Review B (PRB). p. 125302. ISSN 1098-0121

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Abstract

We characterize the role of the spin-orbit coupling between electrons and the confining potential of the edge in nonequilibrium two-dimensional homogeneous electronic gas. We derive a simple analytical result for the magnitude of the current-induced spin polarization at the edge and prove that it is independent of the details of the confinement edge potential and the electronic density within realistic values of the parameters of the considered models. While the amplitude of the spin accumulation is comparable to the experimental values of extrinsic spin-Hall effect in similar samples, the spatial extent of edge-induced effect is restricted to the distances on the order of Fermi wavelength (similar to 10 nm).

Item Type:	Article
Copyright, Publisher and Additional Information:	© 2010 American Physical Society. This is an author produced version of a paper published in PHYSICAL REVIEW B. Uploaded in accordance with the publisher's self archiving policy.
Academic Units:	The University of York > Physics (York)
Depositing User:	Repository Administrator York
Date Deposited:	07 May 2010 10:43
Last Modified:	01 May 2013 23:01
Published Version:	http://dx.doi.org/10.1103/PhysRevB.81.125302
Status:	Published
Refereed:	Yes
Related URLs:	http://dx.doi.org/10.1103/PhysRevB.81.12...
URI:	http://eprints.whiterose.ac.uk/id/eprint/10813

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