title: Ultrafast hot-electron dynamics observed in Pt( -)(3) using time-resolved photoelectron spectroscopy
abstract: Time-resolved two-photon photoelectron spectra have been measured for free Pt( -)(3) using femtosecond pulses of 1.5 eV photon energy in a pump-probe configuration. The time-dependent photoelectron distribution reveals a lifetime of optically excited states of less than 70 fs. Such an unexpected fast electron relaxation in Pt( -)(3) suggests the existence of inelastic electron-electron scattering processes in a triatomic cluster which result in a lifetime similar to those of bulk metals.
authors.affiliation: Institut fur Festkorperforschung, Forschungszentrum Julich GmbH, D-52425 Julich, Germany.
authors.initials: N
authors.lastname: Pontius
authors.initials: PS
authors.lastname: Bechthold
authors.initials: M
authors.lastname: Neeb
authors.initials: W
authors.lastname: Eberhardt