Mechanisms of surface diffusion

被引:64
作者
Tsong, TT [1 ]
机构
[1] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
关键词
diffusion; surface diffusion; hopping mechanism; tunneling mechanism; atomic-exchange mechanism; tumbling mechanism; bond stretching mechanism; periphery diffusion mechanism; evaporation condensation mechanism; gliding mechanism; glide and lock-in mechanism;
D O I
10.1016/S0079-6816(01)00026-0
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
Mechanisms of surface diffusion of single atoms, molecules and atomic clusters on flat terraces (with and without a driving force) of metal and semiconductor surfaces are discussed, focusing on our recent scanning tunneling microscopy (STM) results. Experimental evidence leading to these conclusions is presented. Besides the commonly known hopping mechanism, there are many other mechanisms. In Arrhenius analysis, a linear behavior can be expected for only some of the simpler mechanisms. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:235 / 248
页数:14
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