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Raman scattering by electron-hole excitations in silver nanocrystals

H. Portales·E. Duval·L. Saviot·M. Fujii·M. Sumitomo·S. Hayashi
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Abstract

Raman scattering experiments from silver nanocrystals embedded in films of amorphous silica are reported. In addition to the low-frequency peak due to vibrational quadrupolar modes, a broadband is observed in the high-frequency range, with a maximum at about 1000 $cm^{-1}$. The linear dependence of the position of this maximum on the inverse cluster radius is in agreement with the Raman scattering by single or collective electron-hole excitations.

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H. Portales, E. Duval, L. Saviot, M. Fujii, M. Sumitomo, S. Hayashi. 2001-01-31. Raman scattering by electron-hole excitations in silver nanocrystals. https://doi.org/10.1103/physrevb.63.233402

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