Research Papers in Physics and Astronomy

 

Date of this Version

11-2014

Citation

Published in Solid State Communications 198 (November 2014) pp. 66–70; doi: 10.1016/j.ssc.2013.08.004 (Special Issue on Spin Mechanics)

Previously published in arXiv.org October 22, 2013: http://arxiv.org/abs/1310.5847

Submitted June 17, 2013; accepted August 9, 2013; published online in Solid State Communications January 7, 2014.

Since Elsevier policy does not permit the hosting of the version published in Solid State Communications, the arXiv.org edition is reproduced here, with one additional reference supplied in a note.

Comments

Copyright © 2013 Elsevier Ltd. Used by permission.

Abstract

We propose the manipulation of Majorana edge states via hybridization and spin currents in a nanowire spin transistor. The spin transistor is based on a heterostructure nanowire comprising of semiconductors with large and small g-factors that form the topological and non-topological regions respectively. The hybridization of bound edge states results in spin currents and 4π-periodic torques, as a function of the relative magnetic field angle – an effect which is dual to the fractional Josephson effect. We establish relation between torques and spin-currents in the non-topological region where the magnetic field is almost zero and spin is conserved along the spin–orbit field direction. The angular momentum transfer could be detected by sensitive magnetic resonance force microscopy techniques.

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