High order vibration modes of glass embedded AgAu nanoparticles

Abstract

High resolution low frequency Raman scattering measurements from embedded AgAu nanoparticles unveil efficient scattering by harmonics of both the quadrupolar and the spherical modes. Comparing the experimental data with theoretical calculations that account for both the embedding medium and the resonant Raman process enables a very complete description of the observed multiple components in terms of harmonics of both the quadrupolar and spherical modes, with a dominating Raman response from the former ones. It is found that only selected harmonics of the quadrupolar mode contribute significantly to the Raman spectra in agreement with earlier theoretical predictions.

11 pages, 4 figures

References in corpus (1)

• Longitudinal versus transverse spheroidal vibrational modes of an elastic sphere

Cited by in corpus (5)

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• Number of observable features in the acoustic-Raman spectra of nanocrystals