Interaction of CO molecules with surface state electrons on Ag(111)

被引：43

作者：

Kulawik, M

Rust, HP

Heyde, M

Nilius, N

Mantooth, BA

Weiss, PS

Freund, HJ

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

[2] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

[3] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

来源：

SURFACE SCIENCE | 2005年 / 590卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

STM; CO; Shockley surface state; Ag(111); physisorption;

D O I：

10.1016/j.susc.2005.05.068

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：

Like other close-packed noble metal surfaces, Ag(111) exhibits an occupied Shockley-type surface state that is believed to influence the adsorption of atoms and molecules. Using low-temperature scanning tunneling microscopy, we have directly probed this interaction by investigating the local CO distribution dependent on the Ag(111) surface state standing wave pattern forming in the neighborhood of strong scattering centers such as step edges or hexagonal holes. A quantitative analysis of the STM data reveals that the CO molecules are not arbitrarily distributed upon adsorption at 5 K; they adsorb preferentially near the minima of the standing wave pattern. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：L253 / L258

页数：6

共 26 条

[1] OBSERVATION OF QUANTUM-SIZE EFFECTS AT ROOM-TEMPERATURE ON METAL-SURFACES WITH STM [J].