Role of elastic strain and relaxation on the molecular-beam epitaxial growth of III-V alloy pseudomorphic layers

Abstract
Elastic strain and relaxation are shown to play a central role in the local equilibrium properties of III-V alloys during molecular-beam epitaxy. An epitaxial alloy statistical model which accounts for these effects is proposed. The variation with temperature of the In-incorporation coefficient in (A1,In)As/InP and (A1,In)As/GaAs, measured from reflection high-energy electron-diffraction intensity oscillations, is discussed in the framework of the proposed model.