Solid-on-solid Monte Carlo investigation of islanding kinetics during heteroepitaxy

Ken Payne, Jeffery Drucker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We have investigated the kinetics of islanding during heteroepitaxy using a solid-on-solid Monte Carlo (SOS-MC) simulation. We simulate deposition by randomly depositing atoms onto a square grid with periodic boundary conditions. Arrhenius surface diffusion kinetics are dependent on the sum of a surface energy barrier (E d) and the number of nearest neighbors multiplied by an adatom interaction strength (E b). We confine growth to the first layer above the simple cubic substrate and investigate coverages < 1/2 monolayer. We monitor the evolution of film microstructure by producing island size distributions and plots which compare a cluster's area to perimeter ratio with that of a circle. We find that our simulation qualitatively correlates with results of classical film nucleation theory. A simple model is used to demonstrate the existence of a 'probabilistic nucleation barrier'.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Pages53-58
Number of pages6
Volume399
StatePublished - 1996
Externally publishedYes
EventProceedings of the 1995 MRS Fall Meeting - Boston, MA, USA
Duration: Nov 27 1995Dec 1 1995

Other

OtherProceedings of the 1995 MRS Fall Meeting
CityBoston, MA, USA
Period11/27/9512/1/95

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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