Electronic relaxation of alkali metal atoms on the Cu(111) surface

被引：29

作者：

Petek, H ^{[1
]}

Weida, LJ ^{[1
]}

Nagano, H ^{[1
]}

Ogawa, S ^{[1
]}

机构：

[1] Hitachi Ltd, Adv Res Lab, Hatoyama, Saitama 3500395, Japan

来源：

SURFACE SCIENCE | 2000年 / 451卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

alkali metals; chemisorption; copper; photon photoemission;

D O I：

10.1016/S0039-6028(00)00004-2

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：

Interferometric time-resolved two-photon photoemission measurements are performed on Cs and Rb chemisorbed on Cu(111). The population decay of the alkali-atom-induced anti-bonding state at 35 K is observed on 50 fs and 20 fs time scales for Cs and Rb respectively. Factors that contribute to such unusually long lifetimes, and in general determine the lifetimes of adsorbates on metal surfaces, are discussed in light of related measurements by Bauer et ai. [Phys. Rev. B 60 (1999) 5016] and theoretical simulations by Borisov et al. [Surf. Sci. 430 (1999) 165]. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：22 / 30

页数：9

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