Volume 90, Number 6, June 2010
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||08 July 2010|
Inverse spin Hall effect and anomalous Hall effect in a two-dimensional electron gas
Institut für Physik, Universität Augsburg - 86135 Augsburg, Germany, EU
2 Institut für Mathematische Physik, Technische Universität Braunschweig - 38106 Braunschweig, Germany, EU
3 CNISM and Dipartimento di Fisica “E. Amaldi”, Università Roma Tre - 00146 Roma, Italy, EU
Corresponding author: email@example.com
Accepted: 9 June 2010
We study the coupled dynamics of spin and charge currents in a two-dimensional electron gas in the transport diffusive regime. For systems with inversion symmetry there are established relations between the spin Hall effect, the anomalous Hall effect and the inverse spin Hall effect. However, in two-dimensional electron gases of semiconductors like GaAs, inversion symmetry is broken so that the standard arguments do not apply. We demonstrate that in the presence of a Rashba type of spin-orbit coupling (broken structural inversion symmetry) the anomalous Hall effect, the spin Hall and inverse spin Hall effect are substantially different effects. Furthermore, we discuss the inverse spin Hall effect for a two-dimensional electron gas with Rashba and Dresselhaus spin-orbit coupling; our results agree with a recent experiment.
PACS: 72.25.-b – Spin polarized transport / 72.25.Rb – Spin relaxation and scattering
© EPLA, 2010
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