Phase-field model of island growth in epitaxy

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	Phase-field model of island growth in epitaxy
	Yu, YM ; Liu, BG
刊名	PHYSICAL REVIEW E
	2004
卷号	69 期号:2
关键词	MOLECULAR-BEAM EPITAXY HOMOEPITAXY TEMPERATURE MORPHOLOGY TRANSITION SIMULATION IRON
ISSN号	1539-3755
通讯作者	Yu, YM (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China.
中文摘要	Nucleation and growth of islands in epitaxy is simulated using a continuum phase-field model. In addition to local density of adatoms, a local phase-field variable, varying in the real space, is introduced to describe the epitaxial islands. Evolution of this phase field is determined by a time-dependent Ginzburg-Landau-like equation coupled to a diffusive transport equation of adatoms. When applied to nucleation and growth of islands in the submonolayer regime, this model reproduces both the scaling laws of island density and experimental size and spatial distributions of islands. For island growth in the multilayer regime, this phase-field model reproduces mound structures consistent with experimental images concerned. Accurate coarsening and roughening exponents of the mounds are obtained in this model. Compared with atomic models and mean-field models, this model can provide a fine visualized morphology of islands at large space and time scales of practical engineering interests.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/50854]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Yu, YM,Liu, BG. Phase-field model of island growth in epitaxy[J]. PHYSICAL REVIEW E,2004,69(2).
APA	Yu, YM,&Liu, BG.(2004).Phase-field model of island growth in epitaxy.PHYSICAL REVIEW E,69(2).
MLA	Yu, YM,et al."Phase-field model of island growth in epitaxy".PHYSICAL REVIEW E 69.2(2004).