E Giglio et al 2000 J. Phys. B: At. Mol. Opt. Phys. 33 L333 doi:10.1088/0953-4075/33/9/103
E Giglio1, P-G Reinhard2,3 and E Suraud1,3
Show affiliationsWe show that semiclassical methods provide a valid description for the electronic and ionic dynamical response of metal clusters in the regime of high excitation energies. We consider real time dynamics for electrons at a Vlasov-LDA level and include dynamical correlations by an Ühling-Uhlenbeck collision term. Coupling to ionic motion is explicitly accounted for by means of a pseudo potential. It is found that electron-electron collisions are more important than electron-ion collisions for determining the width of the plasmon response at high excitation energies. The coupling to true ionic motion yields non-adiabatic molecular dynamics which is validated on the picosecond time scale.
36.40.Cg Electronic and magnetic properties of clusters
34.50.Gb Electronic excitation and ionization of molecules
36.40.Sx Diffusion and dynamics of clusters
31.15.xg Semiclassical methods
Issue 9 (14 May 2000)
Received 15 February 2000
E Giglio et al 2000 J. Phys. B: At. Mol. Opt. Phys. 33 L333
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