Pair correlation in two-electron emission from surfaces

被引：36
|
作者：
Berakdar, J
Gollisch, H
Feder, R
机构：
[1] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany
[2] Univ Duisburg Gesamthsch, D-47048 Duisburg, Germany
来源：
SOLID STATE COMMUNICATIONS | 1999年 / 112卷 / 10期
关键词：
metals; surfaces and interfaces; electron-electron interactions; electron emission spectroscopies;
D O I：
10.1016/S0038-1098(99)00365-8
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
An electron pair emitted from a crystalline surface system is represented by a relativistic two-electron scattering state, which contains the pair correlation mediated by a screened Coulomb interaction. This state is obtained from the solutions of two one-electron Dirac equations with potentials, which incorporate the electron-electron interaction as a dynamical screening of the usual effective one-electron potentials, Numerical applications to the electron pair emission due to low-energy electron impact on a He atom and on a clean W(001) surface demonstrate that pair correlation effects can be quite strong and significantly improve the agreement of calculated results with experimental data. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：587 / 591
页数：5
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