Monte‐Carlo simulations of MBE growth of III–V semiconductors: The growth kinetics, mechanism, and consequences for the dynamics of RHEED intensity

Results of Monte Carlo simulations carried out to examine the nature of the growth mechanism in MBE of lattice matched III–V compounds are presented. The role of surface molecular reaction kinetics associated with the dissociative chemisorption of the group V molecular specie is explicitly investigated for the first time and shown to lead to a new configuration‐dependent‐reactive‐incorporation (CDRI) growth process, quite distinct from the conventional notions of nucleation and continuous growth. For very slow dissociative reaction kinetics the CDRI growth process is shown to lead to a reaction‐limited‐incorporation (RLI) growth mechanism and the accompanying growth rate exhibits oscillatory behavior. For fast dissociative reaction kinetics, accompanied with a sufficiently fast surface interlayer migration kinetics of the group III atoms, the CDRI growth process gives rise to a configuration‐limited‐reactive‐incorporation (CLRI) growth mechanism. The crystal growth rate once again exhibits oscillations. I...