Transients due to instabilities hinder Kardar-Parisi-Zhang scaling: A unified derivation for surface growth by electrochemical and chemical vapor deposition

被引:34
作者
Cuerno, R
Castro, M
机构
[1] Univ Carlos III Madrid, Dept Matemat, Leganes 28911, Spain
[2] Univ Carlos III Madrid, GISC, Leganes 28911, Spain
[3] Univ Pontificia Comillas, Madrid 28015, Spain
[4] Univ Complutense Madrid, Fac Ciencias Fis, Dept Fis Mat, E-28040 Madrid, Spain
[5] Univ Complutense Madrid, Fac Ciencias Fis, GISC, E-28040 Madrid, Spain
关键词
D O I
10.1103/PhysRevLett.87.236103
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We propose a unified moving boundary problem for surface growth by electrochemical and chemical vapor deposition, which is derived from constitutive equations into which stochastic forces are incorporated. We compute the coefficients in the interface equation of motion as functions of phenomenological parameters. The equation features the Kardar-Parisi-Zhang (KPZ) nonlinearity and instabilities which, depending on surface kinetics, can hinder the asymptotic KPZ scaling. Our results account for the universality and the experimental scarcity of KPZ scaling in the growth processes considered.
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页数:4
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