We have calculated the layer-by-layer core level eigenvalues and densi
ties of states of Cu3Au in the vicinity of the (100) surface, assuming
a 50:50 Cu:Au termination. We used the relativistic SCF-LMTO-ASA meth
od in a slab geometry and we included the surface dipole terms. We obt
ain very good agreement with the available experimental photoemission
data. (C) 1997 Elsevier Science Ltd.