Charge and spin current in a quasi-one-dimensional quantum wire with spin-orbit coupling

Abstract

We show that Rashba spin-orbit coupling may result in an energy gap in the spectrum of electrons in a two-mode quantum wire if a suitable confining potential is chosen. This leads to a dip in the conductance and a spike in the spin current at the corresponding position of the Fermi level. Therefore one may control the charge and spin currents by means of electrostatic gates without using magnetic field or magnetic materials.

5 pages, 5 figures, published version

References in corpus (7)

• Fano-Rashba effect in a quantum wire
• Enhancement of polarization in a spin-orbit coupling quantum wire with a constriction
• Effect of gate-driven spin resonance on the conductance of a one-dimensional quantum wire
• Polarized Electric Current in Semiclassical Transport with Spin-Orbit Interaction
• Multichannel effects in Rashba quantum wires
• Spin current diode based on an electron waveguide with spin-orbit interaction
• Spin-current quantization in a quantum point contact with spin-orbit interaction

Cited by in corpus (5)

• Spin selectivity through time-reversal symmetric helical junctions
• Conductance behavior in nanowires with spin-orbit interaction -- A numerical study
• Seebeck effects in two-dimensional spin transistors
• Spin-filtering in a $p$-orbital helical atomic chain
• Spin-orbit coupling and resonances in the conductance of quantum wires