Experimental Investigation Of Spin-Orbit Coupling In N-Type Pbte Quantum Wells

The spin-orbit coupling is studied experimentally in two PbTe quantum wells by means of weak antilocalization effect. Using the Hikami-Larkin-Nagaoka model through a computational global optimization procedure, we extracted the spin-orbit and inelastic scattering times and estimated the strength of the zero field spin-splitting energy Delta(so). The values of Dso are linearly dependent on the Fermi wave vector (k(F)) confirming theoretical predictions of the existence of large spin-orbit coupling in IV-VI quantum wells originated from pure Rashba effect. (C) 2014 AIP Publishing LLC.