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

• 来源期刊: 中国物理(英文版)
• 关键词: surface growth dynamic renormalization-group theory growth inhomogeneity
• 年，卷（期）: 2000,（10）
• 页码范围: 737-741
• 页数: 5页
• 语种: 英文

摘要

The dynamic scaling properties of growing surfaces with growth inhomogeneities are studied by applying a dy namic 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 inho mogeneities 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.