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 Δ₀, Δ₀^', and Δ^- 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 Δ^- parameter to the electron g factor of II-VI materials is calculated and found to be larger than the ``conventional'' g factor (without the Δ^- 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.