Nonlinear photoemission from W and Cu investigated by total-yield correlation measurements
Anno: 1997
Autori: Bartoli A., Ferrini G., Fini L., Gabetta G., Parmigiani F., Arecchi F.T.
Affiliazione autori: Dep. of Physics and European Laboratory for Non-Linear Spectroscopy, University of Florence, Italy;
INFM and Dep. of Physics, Polytechnic of Milan, Italy;
Materials Division CISE Tecnologie Innovative SpA, milan, Italy;
Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy
Abstract: Nonlinear photoelectric emission from Cu and W is investigated by subpicosecond laser pulses. Using a pump and probe technique, total-yield correlation measurements are obtained without space-charge saturation. The effects of the heating of the conduction electrons induced by the laser pulses are shown, considering the peak to background contrast ratio of the experimental correlation trace. The present analysis clarifies the consequences of a transient nonequilibrium temperature difference between electrons and the lattice on the correlation trace, confirming for W the presence of a thermally assisted photoemission mechanism.
Giornale/Rivista: PHYSICAL REVIEW B
Volume: 56 (3) Da Pagina: 1107 A: 1110
Parole chiavi: NONEQUILIBRIUM ELECTRON; PHOTOELECTRIC-EMISSION; FEMTOSECOND; TUNGSTEN; METALSDOI: 10.1103/PhysRevB.56.1107Citazioni: 12dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui