https://doi.org/10.1140/epjd/e2003-00164-y
Size dependence of the plasmon peak position in electron stimulated photon emission spectra of Ag clusters supported on amorphous carbon film
1
Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
2
Institute of Physics, National Academy of Sciences of Ukraine, pr. Nauki 46, 03028 Kiev, C.I.S./Ukraine
3
Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany
Corresponding author: a D.Ievlev@fkf.mpg.de
Received:
10
September
2002
Published online:
3
July
2003
The plasmon energy of Ag clusters produced on an amorphous carbon substrate by gas-aggregation technique has been measured. It has been determined from the plasmon peak position in the light emission spectrum obtained during bombardment of Ag clusters by low-energy electrons. For Ag cluster films with maximum of the cluster size distribution at 30, 8 and 2.5 nm, the plasmon energy comprised 3.76, 4.13 and 4.28 eV (the wavelength was 330, 300 and 290 nm), respectively. The blue shift of the plasmon energy is probably related to the effect of confounding of collective and single-particle excitations.
PACS: 61.46.+w – Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals / 73.22.Lp – Collective excitations
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
