Current induced local spin polarization due to the spin-orbit coupling in a two dimensional narrow strip

Abstract

The current induced local spin polarization due to weak Rashba spin-orbit coupling in narrow strip is studied. In the presence of longitudinal charge current, local spin polarizations appear in the sample. The spin polarization perpendicular to the plane has opposite sign near the two edges. The in-plane spin polarization in the direction perpendicular to the sample edges also appears, but does not change sign across the sample. From our scaling analysis based on increasing the strip width, the out-of-plane spin polarization is important mainly in a system of mesoscopic size, and thus appears not to be associated with the spin-Hall effect in bulk samples.

4 pages, 4 figures

References in corpus (12)

• Dissipationless Quantum Spin Current at Room Temperature
• Spin current and polarization in impure 2D electron systems with spin-orbit coupling
• Spin Hall Insulator
• Can Non-Equilibrium Spin Hall Accumulation be Induced in Ballistic Nanostructures?
• Spin Hall effect and Berry phase in two dimensional electron gas
• Spin-Hall Effect in Two-Dimensional Electron Systems with Rashba Spin-Orbit Coupling and Disorder
• Manifestation of the spin-Hall effect through transport measurements in the mesoscopic regime
• Dissipation effects in spin-Hall transport of electrons and holes
• Intrinsic Spin and Orbital-Angular-Momentum Hall Effect
• Mesoscopic Spin Hall Effect in Multiprobe Ballistic Spin-Orbit Coupled Semiconductor Bridges
• Large tunneling anisotropic magnetoresistance in (Ga,Mn)As nanoconstrictions
• Non-vanishing spin Hall currents in disordered spin-orbit coupling systems