Resonant interband scattering of image-potential states

被引：0
|
作者：
W. Berthold
J. Güdde
P. Feulner
U. Höfer
机构：
[1] Fachbereich Physik und Wissenschaftliches Zentrum für Materialwissenschaften,
[2] Philipps-Universität,undefined
[3] 35032 Marburg,undefined
[4] Germany,undefined
[5] Physik-Department E20,undefined
[6] Technische Universität München,undefined
[7] 85748 Garching,undefined
[8] Germany,undefined
来源：
Applied Physics B | 2001年 / 73卷
关键词：
PACS: 73.20.At; 78.47.+p;
D O I：
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学科分类号：
摘要：
Image-potential states in front of a clean Cu (100) surface were investigated by time- and angle-resolved two-photon photo-emission (2PPE). We observe a previously unknown quasi-elastic relaxation channel, which efficiently couples states with different quantum numbers, n, and parallel momenta, k∥. This process of resonant interband scattering (RIS) is independent of sample temperature and shows a close relationship to the pure dephasing of image-potential states.
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页码：865 / 868
页数：3
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