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We propose a unified moving boundary problem for surface growth byelectrochemical and chemical vapor deposition, which is derived fromconstitutive equations into which stochastic forces are incorporated. Wecompute the coefficients in the interface equation of motion as functions ofphenomenological parameters. The equation features the Kardar-Parisi-Zhang(KPZ) non-linearity and instabilities which, depending on surface kinetics, canhinder the asymptotic KPZ scaling. Our results account for the universality andthe experimental scarcity of KPZ scaling in the growth processes considered.Comment: 4 double-column pages, Revtex4, no figures; to appear in Physical  Review Letter

physical review letters

Transients due to Instabilities Hinder Kardar-Parisi-Zhang Scaling: A Unified Derivation for Surface Growth by Electrochemical and Chemical Vapor Deposition