“…Of course, the local environment of each adatom is taken into account in the spirit of [16] but the psedomorphic deformation of the underlying layers, which does not vary considerably on the atomic scale, affects differently the surface diffusion of the two types of cation atoms on the growing surface and, therefore, contributes to the surface segregation. In our MC procedure the composition and strain profiles are found self-consistently and enter the so-called substrate contribution to the activation energy of surface diffusion [16,22,23]. In the following, the same 4 Structures or strain are called pseudomorphic when the layer is lattice mismatched to the substrate and the strain is accommodated entirely elastically without plastic deformation via formation of crystal defects [21].…”