The electronic structure near to (111) twin stacking faults in Cu was investigated using the layer Koringa-Kohn-Rostoker method. The calculated stacking-fault energy was 58mJ/m2; in excellent agreement with experiment.

Mechanical Stability and Charge Densities near Stacking Faults. J.M.MacLaren, S.Crampin, D.D.Vvedensky, M.E.Eberhart: Physical Review Letters, 1989, 63[23], 2586-9