SPIN-FLIP AND ACOUSTIC-PHONON RAMAN-SCATTERING IN CDS NANOCRYSTALS

We report on spin-flip Raman scattering and on Raman scattering by aco ustic phonons in CdS nanocrystals embedded in a glass matrix. We discu ss both the spin-flip and the acoustic-phonon Raman spectra on the bas is of the interaction of size-quantized electronic excitations with no nconfined acoustic vibrations. The polarization of spin-flip Raman sca ttering in the Faraday and Voigt configurations is analyzed in compari son with that for bulk CdS. The effective electron g factor has been m easured as a function of the quantum dot size.