Low-frequency Raman scattering by volume vibrations of microcrystals
Ovsyuk N. N., Krivoputskaya L. M. , Shebanin A. P.
The low-frequency Raman scattering by germanium microcrystals as a function of the wavelength of the exciting light has been studied. This has been the first experimental demonstration and theoretical confirmation that surface vibrations of microcrystals are transformed into volume vibrations because of the elastic matrix that surrounds them.