Circular photogalvanic effect induced by near-infrared radiation in InAs   quantum wires patterned quasi two-dimensional electron system
  In this work we investigated the InAs/InAlAs quantum wires (QWRs) superlattice by optically exciting the structure with near-infrared radiation. By varying the helicity of the radiation at room temperature we observed the circular photogalvanic effect related to the $C_{2v}$ symmetry of the structure, which could be attributed to the formation of a quasi two-dimensional system underlying in the vicinity of the QWRs pattern. The ratio of Rashba and Dresselhaus terms shows an evolution of the spin-orbit interaction in quasi two-dimensional structure with the QWR layer deposition thickness. 
Chongyun Jiang, Yonghai Chen, Hui Ma, Jinling Yu, Yu Liu
cond-mat.mes-hall