Electron--phonon coupling and anharmonic effects in metal clusters
F. F. Karpeshin, J. da Providencia, C. Providencia, J. da Providencia
Abstract
The periods of the harmonic oscillations of the ion core of charged sodium clusters around the equilibrium shapes are considered. It is found that these periods are of the order of magnitude of the experimentally measured relaxation times of the plasmons, which suggests the importance of the electron-ion coupling and stresses the role played by the electron-phonon interaction in the dissipation of the plasmon energy. The relation of the process to fission is briefly discussed.
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