1. Rashba spin precession in quantum-Hall edge channels
- Author
-
Giuseppe Iannaccone, Michele Governale, Marco G. Pala, and Ulrich Zülicke
- Subjects
Physics ,Zeeman effect ,Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed matter physics ,Numerical analysis ,media_common.quotation_subject ,Energy level splitting ,FOS: Physical sciences ,Quantum Hall effect ,Condensed Matter Physics ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,Asymmetry ,Electronic, Optical and Magnetic Materials ,symbols.namesake ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,symbols ,Quantum ,Rashba effect ,Electron interferometer ,media_common - 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., Comment: 7 pages, 6 figures
- Published
- 2005