Quantum coherence of image-potential states -: art. no. 106802

被引：91
|
作者：
Wahl, P [1 ]
Schneider, MA [1 ]
Diekhöner, L [1 ]
Vogelgesang, R [1 ]
Kern, K [1 ]
机构：
[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 10期
关键词：
D O I：
10.1103/PhysRevLett.91.106802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The quantum dynamics of the two-dimensional image-potential states in front of the Cu(100) surface is measured by scanning tunneling microscopy and spectroscopy. The dispersion relation and the momentum resolved phase-relaxation time of the first image-potential state are determined from the quantum interference patterns in the local density of states at step edges. It is demonstrated that the tip-induced Stark shift does not affect the motion of the electrons parallel to the surface.
引用
收藏
页码：106802 / 106802
页数：4
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