arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0709.0815cond-mat.str-el
收藏

金属薄膜中的非平衡电子相互作用

Nonequilibrium Electron Interactions in Metal Films

Natalia Del Fatti, Roland Bouffanais, Fabrice Vallée, Christos Flytzanis

摘要:

利用飞秒泵浦-探测技术,在非共振条件下,研究了银膜中非热电子分布的超快弛豫动力学。结果产生的电子气体的能量损失率的晶格和自由电子阻尼在早期阶段的电子气体热化随时间的增加的证据。这些影响归因于瞬态改变的电子平均散射过程中,由于非热性质的电子气,在协议与数值模拟。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑