Tunneling spin current and spin diode behavior in bilayer system

Abstract

The coherent tunneling spin current in the bilayer system with spin-orbit coupling is investigated. Based on the continuity-like equations, we discuss the definition of the tunneling current and show that the overlaps between wavefunctions for different layers contribute to the tunneling current. We study the linear response of the tunneling spin current to an in-plane electric field in the presence of nonmagnetic impurities. The tunneling spin conductivity we obtained presents a feature asymmetrical with respect to the gate voltage when the strengthes of impurity potentials are different in each layer.

Revtex, 8 pages, 5 figures

References in corpus (18)

• Spintronics: Fundamentals and applications
• Universal Intrinsic Spin-Hall Effect
• Dissipationless Quantum Spin Current at Room Temperature
• Superconducting Circuits and Quantum Information
• Spin current and polarization in impure 2D electron systems with spin-orbit coupling
• Evidence for a Goldstone Mode in a Double Layer Quantum Hall System
• Suppression of the Persistent Spin Hall Current by Defect Scattering
• Diffuse transport and spin accumulation in a Rashba two-dimensional electron gas
• Spin-Dependent Josephson Current through Double Quantum Dots and Measurement of Entangled Electron States
• SU(2)xU(1) unified theory for charge, orbit and spin currents
• Vertex Corrections on the Anomalous Hall Effect in Spin-polarized Two-dimensional Electron Gases with Rashba Spin-orbit Interaction
• Interplay between ferromagnetism and superconductivity in tunneling currents
• Nonvanishing spin Hall currents in the presence of magnetic impurities
• Quantum dynamics of tunneling between ferromagnets
• Dynamics of spin transport in voltage-biased Josephson junctions
• Magnification of spin Hall effect in bilayer electron gas
• Understanding spin Hall effects from the motion in SU(2)XU(1) fields
• Understanding spin transport from the motion in SU(2)$\times$U(1) fields