Anti-Weak-Localization Study of Rashba Spin-Splitting Energy as a Function of Well Asymmetry in InAlAs/InGaAs/InAlAs Quantum Wells

摘要

We have investigated the values of the Rashba spin-orbit coupling constant α in In_(0.52)Al_(0.48)As/In_(0.53)Ga_(0.47)As/In_(0.52)Al_(0.48)As quantum wells using an anti-weak-localization (AWL) analysis as a function of quantum well asymmetry. We have found that the deduced α values have strong correlations with the structural inversion asymmetry of the pertinent quantum wells as predicted theoretically. This fact suggests that the AWL analysis provides a reliable way to deduce α values experimentally for designing future spintronics devices.