Identification of atomic adsorption site by means of high-resolution photoemission surface core-level shift: oxygen on Ru(1010)

被引：20
|
作者：
Baraldi, A [1 ]
Lizzit, S [1 ]
Paolucci, G [1 ]
机构：
[1] Sincrotrone Trieste, I-34012 Trieste, Italy
来源：
SURFACE SCIENCE | 2000年 / 457卷 / 1-2期
关键词：
chemisorption; low index single crystal surfaces; oxygen; ruthenium; surface structure; morphology; roughness; and; topography; synchrotron radiation photoelectron spectroscopy;
D O I：
10.1016/S0039-6028(00)00394-0
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：
Oxygen adsorption on Ru(10 (1) over bar 0) is studied using the evolution of the 3d(5/2) photoemission surface core-level shift as a function of coverage. We show that the measurements are sensitive to changes occurring to atoms in both the first and the second layer. This permits a direct demonstration that oxygen adsorbs on this surface in the three-fold hexagonal close-packed site. In addition, the role of the ruthenium second layer in the adsorption process is discussed in terms of the oxygen-metal interaction and heat of adsorption. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：L354 / L360
页数：7
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