Layer by layer epitaxy in limited mobility nonequilibrium models of surface growth

TL;DR

This paper investigates layer-by-layer epitaxial growth in limited mobility surface growth models using noise reduction techniques, revealing how diffusion length and noise reduction influence growth regimes and scaling behaviors.

Contribution

It introduces noise reduction methods to study layer-by-layer growth in limited mobility models and analyzes the transition from transient to asymptotic roughening regimes.

Findings

Layer-by-layer growth observed with noise reduction and long diffusion length.

Similar growth behavior in 1+1 and 2+1 dimensions.

Dynamic scaling links transient and asymptotic regimes.

Abstract

We study, using noise reduction techniques, layer by layer epitaxial growth in limited mobility solid-on-solid nonequilibrium surface growth models, which have been introduced in the context of kinetic surface roughening in ideal molecular beam epitaxy. Multiple hit noise reduction and long surface diffusion length lead to qualitatively similar layer by layer epitaxy in 1+1 and 2+1 dimensional limited mobility growth simulations. We discuss the dynamic scaling characteristics connecting the transient layer by layer growth regime with the asymptotic kinetically rough growth regime.