Determination of Rashba-coupling strength for surface two-dimensional electron gas in InAs nanowires

Abstract

A key concept in the field of semiconductor spintronics is an electric field control of spins via the spin-orbit coupling (SOC) and the SOC strength governs efficiency of this control. We propose a new approach that allows the experimental determination of the Rashba SOC strength for ballistic InAs nanowires. The energy spectrum and ballistic transport of carriers through the nanowire with surface two-dimensional electron gas (2DEG) in a homogeneous magnetic field are studied. A general formula for the linear-response one-dimensional ballistic thermopower is derived in the case of complex subband structure. The ballistic conductance and the thermopower are shown to reveal specific features due to strong SOC that allows us to propose a method for the SOC strength determination.

7 pages, 3 figures

References in corpus (2)

• Strong tuning of Rashba spin orbit interaction in single InAs nanowires
• Spin dynamics in rolled-up two dimensional electron gases

Cited by in corpus (6)

• Tuning Rashba spin-orbit coupling in homogeneous semiconductor nanowires
• Enhanced Rashba spin-orbit coupling in core-shell nanowires by the interfacial effect
• Effect of spin-orbit coupling on spectral and transport properties of tubular electron gas in InAs nanowires
• Electronic states and persistent currents in nanowire quantum ring
• Current-induced spin orientation in semiconductors and low-dimensional structures
• Transport spectroscopy for Paschen-Back splitting of Landau levels in InAs nanowires