A calculation of the intrinsic stacking fault energy in silicon was carried out to second-order perturbation in the pseudopotential formalism. The calculated result was 55mJ/m2; which was in remarkably good agreement with the experimental value.

Pseudopotential Calculation of the Stacking Fault Energy in Silicon. L.J.Chen, L.M.Falicov: Philosophical Magazine, 1974, 29[1], 1-8