Nonequilibrium electron interactions in metal films

被引：122

作者：

Del Fatti, N ^{[1
]}

Bouffanais, R ^{[1
]}

Vallee, F ^{[1
]}

Flytzanis, C ^{[1
]}

机构：

[1] Ecole Polytech, CNRS, Opt Quant Lab, F-91128 Palaiseau, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.81.922

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ultrafast relaxation dynamics of an athermal electron distribution is investigated in silver films using a femtosecond pump-probe technique with 18 fs pulses in off-resonant conditions. The results yield evidence for an increase with time of the electron-gas energy loss rate to the lattice and of the free electron damping during the early stages of the electron-gas thermalization. These effects are attributed to transient alterations of the electron average scattering processes due to the athermal nature of the electron gas, in agreement with numerical simulations.

引用

页码：922 / 925

页数：4

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