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Rashba spin precession in quantum Hall edge channels

Marco G. Pala·Michele Governale·Ulrich Zülicke·Giuseppe Iannaccone
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Abstract

Quasi--one dimensional edge channels are formed at the boundary of a two-dimensional electron system subject to a strong perpendicular magnetic field. We consider the effect of Rashba spin--orbit coupling, induced by structural inversion asymmetry, on their electronic and transport properties. Both our analytical and numerical results show that spin--split quantum--Hall edge channels exhibit properties analogous to that of Rashba--split quantum wires. Suppressed backscattering and a long spin life time render these edge channels an ideal system for observing voltage--controlled spin precession. Based on the latter, we propose a magnet--less spin--dependent electron interferometer.

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Marco G. Pala, Michele Governale, Ulrich Zülicke, Giuseppe Iannaccone. 2004-09-22. Rashba spin precession in quantum Hall edge channels. https://doi.org/10.1103/physrevb.71.115306

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