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Effect of surface fluctuations in the line shape of plasma resonances in small metal clusters

Authors: J.M. Pacheco and R.A. Broglia

Ref.: Physical Review Letters 62, 1400-1402 (1989)

Abstract: The line shape of plasma resonances in small clusters (8 < n < 20) is calculated taking into account quadropole fluctuations of the cluster shape. At room temperatures, an average value of Tau/omega M sim 0.1 for the damping factor is found. In the case of deformed clusters, these fluctuations are not able to wash out the multipeaked structure associated with the dipole resonance along the principal axes of the cluster.