Subclasses in Mixing Correlated Growth Processes with Randomness

TL;DR

This paper investigates how different deposition mechanisms in mixed growth processes influence surface roughness and bulk morphology, emphasizing the importance of void creation in continuum models within a single universality class.

Contribution

It introduces a distinction within a single universality class based on void creation during growth, affecting surface roughening and bulk morphology in correlated growth processes.

Findings

Void creation impacts surface roughness scaling.

Bulk morphology influences surface roughening.

Nonuniversal prefactors reflect bulk properties.

Abstract

We show that in the construction of continuum equations for competitive growth processes that are a mixture of random deposition and a correlation process, a distinction must be made within a \textit{single universality class} between depositions that do and do not create voids in the bulk. Within these subclasses the bulk morphology is reflected in the surface roughening via \textit{nonuniversal} prefactors in the universal scaling of the surface width.