Spin polarization in biased Rashba-Dresselhaus two-dimensional electron systems

Abstract

Based on spin-charge coupled drift-diffusion equations, which are derived from kinetic equations for the spin-density matrix in a rigorous manner, the electric-field-induced nonequilibrium spin polarization is treated for a two-dimensional electron gas with both Rashba and Dresselhaus spin-orbit coupling. Most emphasis is put on the consideration of the field-mediated spin dynamics for a model with equal Rashba and Dresselhaus coupling constants, in which the spin relaxation is strongly suppressed. Weakly damped electric-field-induced spin excitations are identified, which remind of space-charge waves in crystals.

12 pages

References in corpus (20)

• Non-ballistic spin field-effect transistor
• An Exact SU(2) Symmetry and Persistent Spin Helix in a Spin-Orbit Coupled System
• Giant Spin Relaxation Anisotropy in Zinc-Blende Heterostructures
• Anisotropic transport in the two-dimensional electron gas in the presence of spin-orbit coupling
• Spin Relaxation Anisotropy in Two-Dimensional Semiconductor Systems
• Spin-Hall and spin-diagonal conductivity in the presence of Rashba and Dresselhaus spin-orbit coupling
• Anisotropic current-induced spin accumulation in the two-dimensional electron gas with spin-orbit coupling
• Non-diffusive spin dynamics in a two-dimensional electron gas
• Spin relaxation in a generic two-dimensional spin-orbit coupled system
• Spin-Hall conductivity of a disordered 2D electron gas with Dresselhaus spin-orbit interaction
• Persistent spin helix in Rashba-Dresselhaus two-dimensional electron systems
• Quantum World-line Monte Carlo Method with Non-binary Loops and Its Application
• Theory of electric-field-induced spin accumulation and spin current in the two-dimensional Rashba model
• Band structure and magnetotransport of a two-dimensional electron gas in the presence of spin-orbit interaction
• Drift-Diffusion Approach to Spin-Polarized Transport
• Spin Transport in Two Dimensional Hopping Systems
• Spin diffusion/transport in $n$-type GaAs quantum wells
• Spin relaxation in a Rashba semiconductor in an electric field
• Generalized Kubo formula for spin transport: A theory of linear response to non-Abelian fields
• Bulk electron spin polarization generated by the spin Hall current

Cited by in corpus (9)

• Persistent Spin Textures in Semiconductor Nanostructures
• Theory of coupled spin-charge transport due to spin-orbit interaction in inhomogeneous two-dimensional electron liquids
• Doppler velocimetry of spin propagation in a two-dimensional electron gas
• Coherent Propagation of Spin Helices in a Quantum-Well Confined Electron Gas
• Spin Accumulation in Diffusive Conductors with Rashba and Dresselhaus Spin-Orbit Interaction
• Spin drift and diffusion in one- and two-subband helical systems
• Electric-field induced spin excitations in two-dimensional spin-orbit coupled systems
• Magnetic-field-driven topological transitions in non-centrally-symmetric energy spectrum of 2D electron gas with Rashba-Dresselhaus spin-orbit interaction
• Random walk approach to spin dynamics in a two-dimensional electron gas with spin-orbit coupling