We show that for lattice-mismatched zinc-blende-type (110)-grown quantum wells a significant contribution to the zero-magnetic-field spin splitting of electron subbands comes from strain-induced spin-orbit coupling. Combining envelope function theory and atomistic tight-binding approach we calculate spin-orbit splitting constants for realistic quantum wells. It is found that the strain due to lattice mismatch in conventional GaAs/AlGaAs structures may noticeably modify the spin splitting while in InGaAs/GaAs structures it plays a major role and may even change the sign of the spin splitting constant.
@article{arxiv.1605.08942,
title = {Spin splitting of electron states in lattice-mismatched (110)-oriented quantum wells},
author = {M. O. Nestoklon and S. A. Tarasenko and R. Benchamekh and P. Voisin},
journal= {arXiv preprint arXiv:1605.08942},
year = {2016}
}