Ultrafast hot-electron dynamics observed in Pt3- using time-resolved photoelectron spectroscopy

被引：50

作者：

Pontius, N ^{[1
]}

Bechthold, PS ^{[1
]}

Neeb, M ^{[1
]}

Eberhardt, W ^{[1
]}

机构：

[1] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.84.1132

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Time-resolved two-photon photoelectron spectra have been measured for free P-3(-) using femtosecond pulses of 1.5 eV photon energy in a pump-probe configuration. The time-dependent photoelectron distribution reveals a lifetime of optically excited states of less than 70 fs. Such an unexpected fast electron relaxation in Pt-3(-) suggests the existence of inelastic electron-electron scattering processes in a triatomic cluster which result in a lifetime similar to those of bulk metals.

引用

页码：1132 / 1135

页数：4

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