Spin orbit-induced anisotropic conductivity of a disordered 2DEG
arXiv:0902.3277 · doi:10.1103/PhysRevB.80.035305
Abstract
We present a semi-automated computer-assisted method to generate and calculate diagrams in the disorder averaging approach to disordered 2D conductors with intrinsic spin-orbit interaction (SOI). As an application, we calculate the effect of the SOI on the charge conductivity for disordered 2D systems and rings in the presence of Rashba and Dresselhaus SOI. In an infinite-size 2D system, anisotropic corrections to the conductivity tensor arise due to phase-coherence and the interplay of Rashba and Dresselhaus SOI. The effect is more pronounced in the quasi-onedimensional case, where the conductivity becomes anisotropic already in the presence of only one type of SOI. The anisotropy further increases if the time-reversal symmetry of the Hamiltonian is broken.
20 pages, 8 figures
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- Dynamic spin-Hall effect and driven spin helix for linear spin-orbit interactions
- Interband contributions to nonlinear transport in semiconductor nanostructures
- Acoustic phonon-limited resistivity in spin-orbit coupled 2DEG: Deformation potential and piezoelectric scattering
- Spin-orbit interaction from low-symmetry localized defects in semiconductors