DYNAMIC SCALING OF GROWING SURFACES WITH GROWTH INHOMOGENEITIES OF SCREENED COULOMBIC FUNCTION
Tang Gang (唐刚)ab, Ma Ben-kun (马本堃)a
a Department of Physics, Beijing Normal University, Beijing 100875, China; b Department of Physics, China University of Mining and Technology, Xuzhou 221008, China
Abstract The dynamic scaling properties of growing surfaces with growth inhomogeneities are studied by applying a dynamic renormalization-group analysis to the generalized Kardar-Parisi-Zhang(hereafter abbreviated to KPZ) equation, which contains an additional term of growth inhomogeneities. In a practical crystal growth process, these growth inhomogeneities can be induced by surface impurities and defects and are modeled by a screened Coulomb function in this paper. Our results show that the existence of the growth inhomogeneities can significantly change the dynamic scaling properties of a growing surface and can lead to a rougher surface.
Received: 19 November 1999
Revised: 14 April 2000
Accepted manuscript online:
(Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
Fund: Project supported by the Doctoral Program Foundation of the Education Ministry of China (Grant No. 96002703).
Cite this article:
Tang Gang (唐刚), Ma Ben-kun(马本堃) DYNAMIC SCALING OF GROWING SURFACES WITH GROWTH INHOMOGENEITIES OF SCREENED COULOMBIC FUNCTION 2000 Chinese Physics 9 737
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