Spin-orbit coupling parameters and electrongfactor of II-VI zinc-blende materials

We perform tight-binding estimates and linear muffin-tin-orbital calculations of the ${\mathrm{\Delta }}_0$, ${\mathrm{\Delta }}_0^{\prime }$, and ${\mathrm{\Delta }}^{\mathrm{-}}$ spin-orbit coupling parameters of II-VI zinc-blende materials. Good agreement is found in the case of ZnTe with recent experimental results by Drechsler et al. [Phys. Rev. B 50, 2649 (1994)]. The contribution from the ${\mathrm{\Delta }}^{\mathrm{-}}$ parameter to the electron g factor of II-VI materials is calculated and found to be larger than the “conventional” g factor (without the ${\mathrm{\Delta }}^{\mathrm{-}}$ contribution) in the case of ZnTe, but smaller for the other II-VI compounds. From the momentum matrix elements used in the calculations, realistic values of the Luttinger parameters are estimated.