Decay dynamics of photoexcited alkali chemisorbates: Real-time investigations in the femtosecond regime

被引：122

作者：

Bauer, M ^{[1
]}

Pawlik, S ^{[1
]}

Aeschlimann, M ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Tech Chem Lab, CH-8092 Zurich, Switzerland

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.60.5016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The inelastic decay time of photoexcited cesium and sodium adsorbed on different single-crystal surfaces has been investigated by means of time-resolved two-photon photoemission. Especially in the case of cesium, we observe a surprisingly high lifetime. For Cs/Cu(111) we obtain a value of 15+/-6 fs. Intra-atomic hybridization, the specific band structure of the substrate, and adsorption site effects may be responsible for this behavior. These different mechanisms are discussed in detail. [S0163-1829(99)09231-0].

引用

页码：5016 / 5028

页数：13

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