COMPRESSION PHASES IN COPPER-OXYGEN COADSORPTION LAYERS ON A RU(0001) SURFACE

被引：7

作者：

SCHMIDT, M

WOLTER, H

SCHICK, M

KALKI, K

WANDELT, K

机构：

[1] Institut für Physikalische und Theoretische Chemie, Universität Bonn, D-5300 Bonn 1

来源：

SURFACE SCIENCE | 1993年 / 287卷

关键词：

D O I：

10.1016/0039-6028(93)91113-4

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 adsorption of Cu on an oxygen-precovered Ru(0001) surface and the interaction within the O-Cu coadsorption layer have been studied at substrate temperatures of 640 and 400 K using dynamical work function change measurements with a Kelvin-probe, LEED observations as well as Cu thermal desorption spectra. The results are consistently explained in terms of a ''compression model'' according to which adsorbing Cu compresses any oxygen surface structure which is less dense than the p(2 x 1) phase, e.g. the p(2 x 2) structure, into a p(2 x 1) structure.

引用

页码：983 / 987

页数：5

共 14 条

[1]

BESOCKE K, 1976, REV SCI INSTRUM, V47

[2] MODEL STUDIES ON BIMETALLIC CU-RU CATALYSTS .1. CU ON RU(0001) [J].