SURFACTANT-INDUCED LAYER-BY-LAYER GROWTH OF AG ON AG(111) - ORIGINS AND SIDE-EFFECTS

被引：274

作者：

VRIJMOETH, J ^{[1
]}

VANDERVEGT, HA ^{[1
]}

MEYER, JA ^{[1
]}

VLIEG, E ^{[1
]}

BEHM, RJ ^{[1
]}

机构：

[1] FDN FUNDAMENTAL RES MATTER,INST ATOM & MOLEC PHYS,1098 SJ AMSTERDAM,NETHERLANDS

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.72.3843

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It has been shown that submonolayer deposits of Sb change the growth mode of Ag(111) from multilayer to layer-by-layer. Using scanning tunneling microscopy, we identify the two main origins of this behavior. (i) Sb lowers the mobility of Ag adatoms on terraces and growing islands. As a direct consequence, the additional edge barrier (barrier to descend a step minus surface diffusion barrier) is reduced. (ii) Sb lowers the mobility along step edges, inducing dendritic island shapes. Both effects favor smoother growth. Neither a lower Ag surface mobility nor heterogeneous nucleation are sufficient for a smooth growth.

引用

页码：3843 / 3846

页数：4

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