ELECTRONIC STATES OF WEAKLY CHEMISORBED SYSTEMS STUDIED BY COMPARING PHOTOEMISSION AND METASTABLE DEEXCITATION SPECTROSCOPIES - CO ON AG(110)

被引：15

作者：

CANEPA, M ^{[1
]}

MATTERA, L ^{[1
]}

POLESE, M ^{[1
]}

TERRENI, S ^{[1
]}

机构：

[1] DIPARTIMENTO FIS,UNITA INFM,I-16146 GENOA,ITALY

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 177卷 / 02期

关键词：

D O I：

10.1016/0009-2614(91)90056-F

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：

The combined use of the photoemission and metastable deexcitation spectroscopy, because of the extreme surface sensitivity of the latter, allows for the observation of electronic states related to molecular chemisorption located in the energy region of the d bands of the metal where ultraviolet photoemission spectroscopy alone cannot give definite information because of strong bulk contributions. In the adsorption of CO on Ag(110), we have detected the following states: E1 = 3.3 +/- 0.15, E2 = 7.0 +/- 0.3, E3 = 9.6 +/- 0.15, E4 = 12.8 +/- 0.15, E5 = 14.9 +/- 0.15 eV (binding energies) obtaining the first evidence of weak chemisorption in this system and a quantitative measure of the mutual influence between the electronic states of the molecule and of the surface.

引用

页码：123 / 128

页数：6

共 21 条

[1] OXYGEN INDUCED ADSORPTION AND REACTION OF H-2, H2O, CO AND CO2 ON SINGLE-CRYSTAL AG(110) [J].