Two-dimensional electron scattering in regions of nonuniform spin-orbit coupling
arXiv:cond-mat/0602560 · doi:10.1103/PhysRevB.74.073305
Abstract
We present a theoretical study of elastic spin-dependent electron scattering caused by a nonuniform Rashba spin-orbit coupling strength. Using the spin-generalized method of partial waves the scattering amplitude is exactly derived for the case of a circular shape of scattering region. We found that the polarization of the scattered waves are strongly anisotropic functions of the scattering angle. This feature can be utilized to design a good all-electric spin-polarizer. General properties of the scattering process are also investigated in the high and low energy limits.
4 pages, 3 figures
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- Spin angular impulse due to spin-dependent reflection off a barrier
- Pure spin-current generated by reflection at a normal metal/2DEG interface
- Unitarity of scattering and edge spin accumulation
- Rashba scattering in the low-energy limit
- Exchange effects on electron scattering through a quantum dot embedded in a two-dimensional semiconductor structure
- Spin-polarized current separator based on a fork-shaped Rashba nanostructure
- Spin polarization direction switch based on an asymmetrical quantum wire
- Spin-dependent electron-impurity scattering in two-dimensional electron systems