Low Temperature Physics: 43, 159 (2017); https://doi.org/10.1063/1.4974193
Физика Низких Температур: Том 43, Выпуск 1 (Январь 2017), c. 190-192    ( к оглавлению , назад )

Enhancement of Raman scattering from molecules placed near metal nanoparticles

B. Barbiellini

Department of Physics, Northeastern University, Boston, MA 02115, USA
E-mail: B.Amidei@neu.edu

Received August 1, 2016


Large Raman scattering cross sections from molecules on surfaces of metallic nanoparticles are described within a renormalization-group theory. In this approach the valence electrons of the molecules are embedded in an effective medium described by a dielectric function, which integrates out the effect of the plasmonic excitations of the metallic nanoparticles. The source of the enhanced photon inelastic scattering is produced by the resonant excitation of surface plasmons at the metallic nanoparticles. A similar theory has been successfully used to explain the resonant x-ray inelastic scattering and the behavior of nonlinear susceptibilities at the x-ray edges.

PACS: 78.30.–j Infrared and Raman spectra;
PACS: 78.67.Вf Nanocrystals, nanoparticles, and nanoclusters.

Key words: SERS, surface Plasmon, renormalization-group theory.

Published online: November 25, 2016