Collective and single-particle dynamics in time-resolved two-photon photoemission

被引：53
|
作者：
Merschdorf, M [1 ]
Kennerknecht, C [1 ]
Pfeiffer, W [1 ]
机构：
[1] Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany
来源：
PHYSICAL REVIEW B | 2004年 / 70卷 / 19期
关键词：
D O I：
10.1103/PhysRevB.70.193401
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A general model for time-resolved two-photon photoemission from solids is presented comprising both collective and single-electron dynamics. In combination with interferometric time-resolved two-photon photoemission, this allows one to determine the shape of the collective response function across the excitation spectrum and the single-particle lifetime of excited electrons. Ag nanoparticles supported on graphite exhibit a strong collective resonance and serve as model system to demonstrate experimentally this separation of collective and single-particle dynamics in two-photon photoemission.
引用
收藏
页码：1 / 4
页数：4
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