Influences of spin accumulation on the intrinsic spin Hall effect in two dimensional electron gases with Rashba spin-orbit coupling
arXiv:cond-mat/0407419 · doi:10.1103/PhysRevB.70.195343
Abstract
In a two dimensional electron gas with Rashba spin-orbit coupling, the external electric field may cause a spin Hall current in the direction perpendicular to the electric field. This effect was called the intrinsic spin Hall effect. In this paper, we investigate the influences of spin accumulation on this intrinsic spin Hall effect. We show that due to the existence of boundaries in a real sample, the spin Hall current generated by the intrinsic spin Hall effect will cause spin accumulation near the edges of the sample, and in the presence of spin accumulation, the spin Hall conductivity will not have a universal value. The influences of spin accumulation on the intrinsic spin Hall effect in narrow strips of two dimensional electron gases with Rashba spin-orbit coupling are investigated in detail.
arXiv comment7 pages, 2 figures
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- Current-induced Spin Polarization in Two-Dimensional Hole Gas
- Role of relaxation in spin Hall effect
- Theory of Nonlinear Response for Charge and Spin Currents
- Topological nature of the proper spin current and the spin-Hall torque
- Spin-Hall Effect in A Symmetric Quantum Wells by A Random Rashba Field
- Spin Hall Conductance of the Two Dimensional Hole Gas in a Perpendicular Magnetic Field
- Some symmetry properties of spin currents and spin polarizations in multi-terminal mesoscopic spin-orbit coupled systems
- Quadratic response theory for spin-orbit coupling in semiconductor heterostructures
- Spin accumulation in the spin Nernst effect
- Wannier interpolation of spin accumulation coefficient