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

页码：L354 / L360

页数：7

共 22 条

[1] SURFACE CORE-LEVEL SHIFTS AS A PROBE OF THE LOCAL OVERLAYER STRUCTURE - CO ON PD(100) [J].