Electrical Manipulation of Spin Precession in an InGaAs-Based 2DEG Due to the Rashba Spin-Orbit Interaction

摘要

We demonstrate a spin interference effect in small arrays of mesoscopic InGaAs rings, which is the time reversal Aharonov–Casher effect. Spin-orbit interaction parameters obtained from the spin interference are consistent with those estimated from Shubnikov–de Haas analysis. This result shows evidence for electrical manipulation of the spin precession angle in an InGaAs 2-D electron gas channel. We control the precession rate in a precise and predictable way with an electrostatic gate.