“…where the mobility of adatoms µ(x n ) = x n (1−x n ) is introduced. The unknown adsorbate interaction potential U n can be defined in the framework of self-consistent approximation, which frequently used by studying pattern formation in reaction-diffusion systems [7,5,6,15,16,17,18,19,20,21,25,26,27 pyramidal structures formation in phase field modeling [31,32,33,34], etc. In the framework of this procedure the interaction potential U n (r) can be represented in the form:…”