Scattering of electrons on the Cu(001) surface by Co adatoms

被引：0
|
作者：
M. Hirschmann
T. Fauster
机构：
[1] Universität Erlangen–Nürnberg,Lehrstuhl für Festkörperphysik
来源：
Applied Physics A | 2007年 / 88卷
关键词：
Decay Rate; Elastic Scattering; Probe Pulse; Bulk State; Quantum Beat;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Excited electrons at surfaces can be scattered by adsorbate atoms or defects, which changes the energy or momentum. Such scattering processes can be studied by energy, time and angle-resolved two-photon photoelectron spectroscopy. In this article the influence of statistically distributed Co adatoms on a Cu(001) surface on the dynamics of electrons in image-potential states is investigated. Different scattering mechanisms, such as interband, intraband, and bulk scattering are identified and analyzed quantitatively. Cobalt adatoms cause mainly quasielastic scattering of electrons in image-potential states. Inelastic processes are due to interactions with electrons in the substrate and are not significantly increased by Co adatoms. The results are compared to previous experimental and theoretical work on Cu adatoms.
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页码：547 / 554
页数：7
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