Image potential states on metal surfaces: binding energies and wave functions

被引:440
作者
Chulkov, EV
Silkin, VM
Echenique, PM
机构
[1] Univ Basque Country, EHU, Dept Fis Mat, San Sebastian 20018, Spain
[2] Univ Basque Country, EHU, CSIC, Ctr Mixto, San Sebastian 20018, Spain
[3] Russian Acad Sci, Inst Strength Phys & Mat Sci, Tomsk 634021, Russia
关键词
alkali metals; alkaline earth metals; aluminium; copper; density functional calculations; semi-empirical models and model calculations; silver; surface electronic phenomena;
D O I
10.1016/S0039-6028(99)00668-8
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
We present self-consistent pseudopotential calculations of both surface and image potential states on simple metal surfaces: Li(110), Na(110), Be(0001), Mg(0001), Al(100), and Al(111). The local density approximation (LDA) is used to describe the one-electron potential inside the film and in the surface region. In the vacuum space (at z>z(im)) the LDA potential is replaced by the image potential. A one-dimensional potential proposed recently is constructed for 14 simple and noble metal surfaces. By using this model potential we study wave functions and binding energies of the image states and also image plane position trends for these metal surfaces. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:330 / 352
页数:23
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