Adatom self-diffusion on Pt (100) surface by an ad-dimer migrating

被引：0
|
作者：
庄军
刘磊
机构：
[1] State Key Joint Laboratory for Materials Modification by Laser
[2] Fudan University
[3] Department of Physics
[4] Ion and Electron Beams
[5] Shanghai 200433
[6] China
来源：
Science China Mathematics | 2000年 / 10期
关键词：
self-diffusion; exchange mechanism; metal surface;
D O I：
暂无
中图分类号：
O482 [固体性质];
学科分类号：
070205 ; 0805 ; 080502 ; 0809 ;
摘要：
We study the self-diffusion of adatom on Pt(100) surface by molecular dynamics. The metal is modeled by the surface embedded-atom potential. Besides the conventional concerted exchange mechanism, a new exchange mechanism in which an ad-dimer diffuses by a concerted motion of three atoms is observed. The importance is that it could become a dominant diffusion mechanism in some cases.
引用
收藏
页码：1108 / 1113
页数：6
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