Simulation of surfactant effects on the growth of metal homoexpitaxial Sb-Ag/Ag(111)  

作　　者：吴黎黎 吴锋民 

机构地区：[1]College of Mathematics and Physics,Information Engineering,Zhejiang Normal University

出　　处：《Chinese Physics B》2010年第6期442-447,共6页中国物理B（英文版）

基　　金：Project supported by the Natural Science Foundation for Young Scientists of Zhejiang Province of China (Grant No.RC02069)

摘　　要：A kinetic Monte Carlo simulation is performed in order to study the effect of Sb atoms as a surfactant on the growth of Ag on Ag（111）. In our model the repulsive mechanism in which the surfactant Sb atoms repel diffusing Ag adatoms, and the exchange mechanism between Ag and Sb atoms, are considered. Our simulations show that the effects of Sb atoms for Ag/Ag（111） growth system are mainly to increase the chances for Ag atoms to overcome the Ehrlich-Schwoebel barrier both in the interlayer growth and along the edge diffusion. The influence of the coverage of Sb atoms and substrate temperature on the growth of Ag/Sb/Ag（111） is discussed.A kinetic Monte Carlo simulation is performed in order to study the effect of Sb atoms as a surfactant on the growth of Ag on Ag（111）. In our model the repulsive mechanism in which the surfactant Sb atoms repel diffusing Ag adatoms, and the exchange mechanism between Ag and Sb atoms, are considered. Our simulations show that the effects of Sb atoms for Ag/Ag（111） growth system are mainly to increase the chances for Ag atoms to overcome the Ehrlich-Schwoebel barrier both in the interlayer growth and along the edge diffusion. The influence of the coverage of Sb atoms and substrate temperature on the growth of Ag/Sb/Ag（111） is discussed.

关 键 词：SURFACTANT repulsive EXCHANGE Monte Carlo simulation 

分 类 号：O485[理学—固体物理]