Spin-Hall effect in semiconductor heterostructures with cubic Rashba spin-orbit interaction

Details Spin-Hall effect in semiconductor heterostructures with cubic Rashba spin-orbit interaction Spin-Hall effect in semiconductor heterostructures with cubic Rashba spin-orbit interaction

2006-02-22

arxiv.org/abs/cond-mat/0602517v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

14 pages

Scientific paper

10.1002/pssb.200562751

We study the spin-Hall effect in systems with weak cubic Rashba spin-orbit interaction. To this end we derive particle and spin diffusion equations and explicit expressions for the spin-current tensor in the diffusive regime. We discuss the impact of electric fields on the Green's functions and the diffusion equations and establish a relationship between the spin-current tensor and the spin diffusion equations for the model under scrutiny. We use our results to calculate the edge spin-accumulation in a spin-Hall experiment and show that there is also a new Hall-like contribution to the electric current in such systems.

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