Theory of spin-Hall transport of heavy holes in semiconductor quantum wells
arXiv:cond-mat/0604539 · doi:10.1088/0953-8984/18/31/039
Abstract
Based on a proper definition of the spin current, we investigate the spin-Hall effect of heavy holes in narrow quantum wells in the presence of Rashba spin-orbit coupling by using a spin-density matrix approach. In contrast to previous results obtained on the basis of the conventional definition of the spin current, we arrive at the conclusion that an electric-field-induced steady-state spin-Hall current does not exist in both, pure and disordered infinite samples. Only an ac field can induce a spin-Hall effect in such systems.
6 pages, submitted to J. Phys.: Condens. Matter
References in corpus (7)
- Dissipationless Quantum Spin Current at Room Temperature
- Spin current and polarization in impure 2D electron systems with spin-orbit coupling
- On A Proper Definition of Spin Current
- Spin-Hall transport of heavy holes in III-V semiconductor quantum wells
- Small-angle impurity scattering and the spin Hall conductivity in 2D systems
- Spin Hall effect of conserved current: Conditions for a nonzero spin Hall current
- Vanishing spin-Hall current in a diffusive Rashba two-dimensional electron system: A quantum Boltzmann equation approach