Long-range ordering of methylidyne on Pt{110}(1x2)

被引：3
|
作者：
Petersen, MA [1 ]
Watson, DTP [1 ]
Jenkins, SJ [1 ]
King, DA [1 ]
机构：
[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England
来源：
JOURNAL OF CHEMICAL PHYSICS | 2002年 / 117卷 / 08期
关键词：
D O I：
10.1063/1.1483847
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：
A c(2x4) LEED pattern is observed for methylidyne (CH) chemisorbed on Pt{110}(1x2) at a saturation coverage of 0.25 ML. Density functional calculations reveal that methylidyne is preferentially adsorbed in the fcc three-fold hollow site on the {111} microfacet of the reconstructed surface. A structure for the ordered overlayer is thus proposed, and both through-metal and through-space interactions are considered as possible causes for this unexpected long-range coherence. We argue that entropic effects may be implicated. (C) 2002 American Institute of Physics.
引用
收藏
页码：3951 / 3955
页数：5
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