How Can We Understand Heteroepitaxial Growth Modes With A Computer Simulation? (a Perspective On The Article, 'heteroepitaxial Growth Modes With Dislocations In A Two-dimensional Elastic Lattice Model')

摘要

In many textbooks, heteroepitaxial growth of crystals is categorized into three typical modes: layer-by-layer growth (Franck-van der Merwe growth), layer-by-layer growth followed by island formation (Stranski-Krastanow growth) and three-dimensional island growth (Volmer-Weber growth). Understanding which one of the growth modes appears for a certain substrate-adsorbate combination has been a longstanding problem from both fundamental and application viewpoints. So far a number of theoretical models and computational methods have been proposed on this problem ranging from macroscopic ones to atomistic ones, although they often contain somewhat ad hoc parameters or otherwise suffer from too much simplification to describe all of the three modes.