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

页码：106802 / 106802

页数：4

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