Interlayer diffusion of adatoms: A scanning-tunneling microscopy study

被引：28

作者：

Lundgren, E ^{[1
]}

Stanka, B ^{[1
]}

Leonardelli, G ^{[1
]}

Schmid, M ^{[1
]}

Varga, P ^{[1
]}

机构：

[1] Vienna Tech Univ, Inst Allgemeine Phys, A-1040 Vienna, Austria

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.82.5068

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Low coverages of Co are deposited at room temperature on a Pt(111) surface with vacancy islands providing a high density of steps. Scanning-tunneling microscopy images with chemical contrast show that Co atoms do not descend Pt steps by diffusing over the step, but descend from the upper terrace to the lower by an exchange diffusion process with the Pt atoms at the step edge. The Co atoms descend a Pt step edge by this process neither at straight A nor at B steps, but rather at the corners or kinks of the vacancy islands.

引用

页码：5068 / 5071

页数：4

共 28 条

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