Oxygen-induced restructuring of strained Cu layers on Ru(0001)

被引：9

作者：

Ammer, C

Meinel, K

Wolter, H

Neddermeyer, H

机构：

[1] Martin-Luther-Univ. Halle-Wittenberg, Fachbereich Physik

来源：

SURFACE SCIENCE | 1997年 / 377卷 / 1-3期

关键词：

copper; epitaxy; low energy electron diffraction (LEED); oxygen; reconstruction; ruthenium; scanning tunneling microscopy; surface structure;

D O I：

10.1016/S0039-6028(96)01361-1

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：

The interaction of O with strained Cu layers on Ru(0001) has been studied by means of high-resolution low-energy electron diffraction and scanning tunneling microscopy. An O-induced (3 x 2 root 3) structure with glide-plane symmetry is observed after exposure in the range 50-200 Langmuir at temperatures between 500 and 700 K on thin Cu films on Ru(0001). At Cu coverages >2 monolayers the structure coexists with different heteroepitaxial Cu/Ru(0001) strain structures. Since O adsorption is accompanied by a drastic mass transport of Cu atoms, we suggest that a two-dimensional O/Cu surface structure is formed containing Cu in more than one layer.

引用

页码：81 / 84

页数：4

共 10 条

[1]

AMMER C, UNPUB SURF SCI

[2] STRAIN RELAXATION IN HEXAGONALLY CLOSE-PACKED METAL-METAL INTERFACES [J].