Kinetic Roughening in Deposition with Suppressed Screening

TL;DR

This paper investigates surface growth models where overhangs are disallowed, using Monte Carlo simulations, and finds that these models belong to the KPZ universality class despite previous assumptions.

Contribution

It demonstrates through extensive simulations that suppressed screening models of deposition still exhibit KPZ universality, clarifying their classification.

Findings

Deposit density increases away from the substrate

Models belong to the KPZ universality class

Surface width growth follows KPZ scaling laws

Abstract

Models of irreversible surface deposition of k-mers on a linear lattice, with screening suppressed by disallowing overhangs blocking large gaps, are studied by extensive Monte Carlo simulations of the temporal and size dependence of the growing interface width. Despite earlier finding that for such models the deposit density tends to increase away from the substrate, our numerical results place them clearly within the standard KPZ universality class.