EVOLUTION OF 2-DIMENSIONAL NUCLEI DURING EPITAXIAL-GROWTH

We study the evolution of two-dimensional nuclei and holes on the isot ropic surface during both crystal growth and growth interruption. We s how that there are fundamental differences between the nuclei evolutio n in the absence of an outer source of condensing atoms, which is desc ribed by the theory of Lifshitz and Slezov, and that in the presence o f such a source, i.e. during epitaxial growth. We also consider the ev olution of the nuclei size distribution function, which is also differ ent for these two cases.