Diffusion driven concerted motion of surface atoms: Ge on Ge(001)

被引:33
作者
Zandvliet, HJW
Galea, TM
Zoethout, E
Poelsema, B
机构
[1] Univ Twente, Dept Appl Phys, NL-7500 AE Enschede, Netherlands
[2] Univ Twente, MESA Res Inst, NL-7500 AE Enschede, Netherlands
关键词
D O I
10.1103/PhysRevLett.84.1523
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The diffusion of Ge dimers on the Ge(001) surface has been studied with scanning tunneling microscopy. We have identified three different diffusion pathways for the dimers: diffusion of on-top dimers over the substrate rows, diffusion across the substrate rows, and diffusion of dimers in the trough. We report on a heretofore unknown phenomenon, namely, diffusion driven concerted motion of substrate atoms. This concerted motion is a direct consequence of the rearrangement of substrate atoms in the proximity of the trough dimer adsorption site.
引用
收藏
页码:1523 / 1526
页数:4
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