Raman scattering by electron-hole excitations in silver nanocrystals

Details Raman scattering by electron-hole excitations in silver nanocrystals Raman scattering by electron-hole excitations in silver nanocrystals

2001-01-31

arxiv.org/abs/cond-mat/0101471v1

Phys. Rev. B 63, 233402-233405, 2001

Physics

Condensed Matter

7 pages, 3 figures. To be pub.in PRB

Scientific paper

10.1103/PhysRevB.63.233402

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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