Campus Units

Mathematics, Physics and Astronomy, Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

12-2005

Journal or Book Title

Physical Review Letters

Volume

95

Issue

25

First Page

256101-1

Last Page

256101-4

DOI

10.1103/PhysRevLett.95.256101

Abstract

A "step dynamics" model is developed for mound formation during multilayer homoepitaxy. Downward funneling of atoms deposited at step edges is incorporated and controls mound slope selection. Behavior of the selected slope differs from that predicted by phenomenological continuum treatments where the lateral mass current vanishes identically. Instead, this current is shown to vary periodically and vanish only on average. An exact coarse-grained continuum formulation with appropriate boundary conditions is derived and recovers step dynamics results.

Comments

This article is from Physical Review Letters 95 (2005): 25601, doi: 10.1103/PhysRevLett.95.256101. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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