Spin filtering effect generated by the inter-subband spin-orbit coupling in the bilayer nanowire with the quantum point contact

Abstract

The spin filtering effect in the bilayer nanowire with quantum point contact is investigated theoretically. We demonstrate the new mechanism of the spin filtering based on the lateral inter-subband spin-orbit coupling, which for the bilayer nanowires has been reported to be strong. The proposed spin filtering effect is explained as the joint effect of the Landau-Zener inter-subband transitions caused by the hybridization of states with opposite spin (due to the lateral Rashba SO interaction) and the confinement of carriers in the quantum point contact region.

14 pages, 11 figures

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Cited by in corpus (7)

• Tuning Rashba spin-orbit coupling in homogeneous semiconductor nanowires
• Enhanced Rashba spin-orbit coupling in core-shell nanowires by the interfacial effect
• Anisotropy of the spin-orbit coupling driven by a magnetic field in InAs nanowires
• Effect of picosecond magnetic pulse on dynamics of electron's subbands in semiconductor bilayer nanowire
• Spin splitting and switching effect in a four-terminal two-dimensional electron gas nanostructure
• Helical and topological phase detection based on nonlocal conductance measurements in a three terminal junction
• Spin Torque Oscillator and Magnetization Switching in double barrier Rashba Zeeman Magnetic Tunnel Junction