Spin accumulation in ballistic Rashba bar

Abstract

We propose an analytic model to study intrinsic spin polarization effect in a ballistic Rashba bar with two semi-infinite leads. The wave functions expanded with plane waves in Rashba bar are required to satisfy boundary conditions at both longitudinal and transverse interfaces. We find out-of-plane spin Hall accumulation effect can be induced in the Rashba bar even with large dimensions by injecting unpolarized current from the lead. The longitudinal in-plane spin Hall effect, however, becomes obscure in large-size sample. An interesting direction-flipping of the out-of-plane spin accumulation is predicted by altering the Rashba coupling strength.

4 pages, 3 Encapsulated Postscript figures

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Cited by in corpus (15)

• Bias-controllable intrinsic spin polarization in a quantum dot
• Persistent spin current in nano-devices and definition of the spin current
• Spin Hall effect in clean two dimensional electron gases with Rashba spin-orbit coupling
• Electric field-induced spin textures in a superlattice with Rashba and Dresselhaus spin-orbit coupling
• Nature of Spin Hall Effect in a finite Ballistic Two-Dimensional System with Rashba and Dresselhaus spin-orbit interaction
• Opposite spin accumulations on the transverse edges by the confining potential
• Spin filtering implemented through Rashba and weak magnetic modulations
• Giant mesoscopic spin Hall effect on surface of topological insulator
• Spin Hall effect due to intersubband-induced spin-orbit interaction in symmetric quantum wells
• Edge-induced spin polarization in two-dimensional electron gas
• Non-equilibrium spin polarization effects in spin-orbit coupling system and contacting metallic leads
• Spin densities in parabolic quantum wires with Rashba spin-orbit interaction
• Some symmetry properties of spin currents and spin polarizations in multi-terminal mesoscopic spin-orbit coupled systems
• Improved transfer matrix method without numerical instability
• On the Role of a Torsion-like Field in a Scenario for the Spin Hall Effect