Ukrainian Journal of Physical Optics

Number 2, Volume 7, 2006

Studies of Raman Scattering from Bi12GeO20 Crystal-Copper Film Interface
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Moiseyenko V. and Vdovin A.

Depolarized Raman spectra have been measured in the geometry of back-scattering from the front surface of Bi12GeO20, the bulk of this crystal and the interface Bi12GeO20-copper film. The characteristics of Raman spectra for the Bi12GeO20 crystal-copper film interface have been determined and compared with those of the crystal volume. It is assumed that the oscillator parameters of the surface vibration on Bi12GeO20 crystal-copper film interface represent a result of plasmon-phonon inter-actions, as well as influence of defects in the frontier layer broken by mechanical polishing. The amplification coefficient of the Raman scattering on surface vibrations has been estimated.

Key words: surface enhanced Raman scattering (SERS), island copper film, cross-section of Raman scattering, phonon modes.

PACS: 78.30.Hv, 78.68.+m

doi 10.3116/16091833/7/2/74/2006

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