Nonequilibrium Electron Interactions in Metal Films

Details Nonequilibrium Electron Interactions in Metal Films Nonequilibrium Electron Interactions in Metal Films

2007-09-06

arxiv.org/abs/0709.0815v1

Phys. Rev. Lett. (81), 922--925, 1998

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevLett.81.922

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.

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