Competing Roughening Mechanisms in Strained Heteroepitaxy: A Fast Kinetic Monte Carlo Study

Chi Hang Lam, Chun Kin Lee, Leonard M. Sander

Research output: Journal article publicationJournal articleAcademic researchpeer-review

79 Citations (Scopus)

Abstract

We study the morphological evolution of strained heteroepitaxial films using kinetic Monte Carlo simulations in two dimensions. A novel Green’s function approach, analogous to boundary integral methods, is used to calculate elastic energies efficiently. We observe island formation at low lattice misfit and high temperature that is consistent with the Asaro-Tiller-Grinfeld instability theory. At high misfit and low temperature, islands or pits form according to the nucleation theory of Tersoff and LeGoues.
Original languageEnglish
JournalPhysical Review Letters
Volume89
Issue number21
DOIs
Publication statusPublished - 1 Jan 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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