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Curved One-Dimensional Wire as a Spin Rotator

Maxim P. Trushin·Alexander L. Chudnovskiy
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Abstract

We propose a semiconductor structure that can rotate the electron spin without using ferromagnetic contacts, tunneling barriers, external radiation etc. The structure consists of a strongly curved one-dimensional ballistic wire with intrinsic spin-orbit interactions of Rashba type. Our calculations and analytical formulae show that the proposed device can redistribute the current densities between the two spin-split modes without backscattering and, thus, serve as a reflectionless and high-speed spin switcher. Using parameters relevant for InAs we investigate the projection of current density spin polarization on the spin-quantization axis as a function of the Rashba constant, external magnetic field, and radius of the wire's curvature.

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Maxim P. Trushin, Alexander L. Chudnovskiy. 2005-09-28. Curved One-Dimensional Wire as a Spin Rotator. https://doi.org/10.1134/s0021364006080042

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