NUCLEATION AND GROWTH OF SQUARE ISLANDS DURING DEPOSITION - SIZES, COALESCENCE, SEPARATIONS AND CORRELATIONS

被引：149
作者：
BARTELT, MC
EVANS, JW
机构：
[1] IOWA STATE UNIV SCI & TECHNOL, DEPT MATH, AMES, IA 50011 USA
[2] IOWA STATE UNIV SCI & TECHNOL, AMES LAB, AMES, IA 50011 USA
来源：
SURFACE SCIENCE | 1993年 / 298卷 / 2-3期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0039-6028(93)90057-Q
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We analyze via simulation the irreversible nucleation, growth and coalescence of square islands during deposition and subsequent diffusion of adatoms. Our model mimics metal-on-fcc (100) metal epitaxy (at lower temperatures). We characterize the low-coverage scaling, and the effects of coalescence and percolation on the island density and full size distribution. Adatom-island, island-island separations, and also the pair correlations are analyzed. Depletion of the density of nearby islands manifested in these quantities is shown to produce a four-fold symmetric ''Henzler ring'' in the diffraction profile.
引用
收藏
页码：421 / 431
页数：11
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