中国物理B ›› 2000, Vol. 9 ›› Issue (10): 737-741.doi: 10.1088/1009-1963/9/10/004

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DYNAMIC SCALING OF GROWING SURFACES WITH GROWTH INHOMOGENEITIES OF SCREENED COULOMBIC FUNCTION

马本堃1, 唐刚2   

  1. (1)Department of Physics, Beijing Normal University, Beijing 100875, China; (2)Department of Physics, Beijing Normal University, Beijing 100875, China; Department of Physics, China University of Mining and Technology, Xuzhou 221008, China
  • 收稿日期:1999-11-19 修回日期:2000-04-14 出版日期:2000-12-25 发布日期:2005-06-10
  • 基金资助:
    Project supported by the Doctoral Program Foundation of the Education Ministry of China (Grant No. 96002703).

DYNAMIC SCALING OF GROWING SURFACES WITH GROWTH INHOMOGENEITIES OF SCREENED COULOMBIC FUNCTION

Tang Gang (唐刚)ab, Ma Ben-kun (马本堃)a   

  1. a Department of Physics, Beijing Normal University, Beijing 100875, China; b Department of Physics, China University of Mining and Technology, Xuzhou 221008, China
  • Received:1999-11-19 Revised:2000-04-14 Online:2000-12-25 Published:2005-06-10
  • Supported by:
    Project supported by the Doctoral Program Foundation of the Education Ministry of China (Grant No. 96002703).

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摘要： 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.

关键词: surface growth, dynamic renormalization-group theory, growth inhomogeneity

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.

Key words: surface growth, dynamic renormalization-group theory, growth inhomogeneity

中图分类号:  (Impurities in crystals)

  • 61.72.S-
68.35.B- (Structure of clean surfaces (and surface reconstruction)) 81.10.-h (Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)