The evolution of CO adsorption on Cu(111) as studied with bare and CO-functionalized scanning tunneling tips

被引:60
作者
Bartels, L
Meyer, G
Rieder, KH
机构
[1] Columbia Univ, New York, NY 10027 USA
[2] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany
基金
美国国家科学基金会;
关键词
CO adsorption; copper; scanning tunneling microscopy;
D O I
10.1016/S0039-6028(99)00640-8
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
CO adlayers on Cu(111) are studied using scanning tunneling microscopy with special attention to the role of functionalized tips prepared by vertical manipulation An attractive adsorbate-adsorbate interaction is found already at ultra-low coverage using lateral manipulation. Increasing the coverage leads to island formation facilitated by a lowering of the diffusion barrier. At 1/3 ML coverage the root 3 x root 3R30 degrees phase can be visualized clearly with GO-functionalized tips. Images obtained at CO saturation exhibit a 4 x 4 supercell of the adlayer as the basis structural element. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:L621 / L626
页数:6
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