Inverse Spin Hall Effect and Anomalous Hall Effect in a Two-Dimensional Electron Gas

Abstract

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.

5 pages

References in corpus (15)

• Dissipationless Quantum Spin Current at Room Temperature
• Direct electronic measurement of the spin Hall effect
• An Exact SU(2) Symmetry and Persistent Spin Helix in a Spin-Orbit Coupled System
• Emergence of the persistent spin helix in semiconductor quantum wells
• Spin current and polarization in impure 2D electron systems with spin-orbit coupling
• Current induced electron spin polarization in strained semiconductors
• Semiclassical theories of the anomalous Hall effect
• Magnetoresistance due to edge spin accumulation
• Vertex Corrections on the Anomalous Hall Effect in Spin-polarized Two-dimensional Electron Gases with Rashba Spin-orbit Interaction
• Intrinsic Spin Hall Effect in the presence of Extrinsic Spin-Orbit Scattering
• Tuning the Spin Hall Effect in a Two-Dimensional Electron Gas
• "Phase Diagram" of the Spin Hall Effect
• Anomalous Hall effect in a two dimensional electron gas with magnetic impurities
• Hybrid skew scattering regime of the anomalous Hall effect in Rashba systems: unifying Keldysh, Boltzmann, and Kubo formalisms
• Kinetic investigation on extrinsic spin Hall effect induced by skew scattering