Spin-flip and acoustic-phonon Raman scattering in CdS nanocrystals
نویسندگان
چکیده
We report on spin-flip Raman scattering and on Raman scattering by acoustic phonons in CdS nanocrystals embedded in a glass matrix. We discuss both the spin-flip and the acoustic-phonon Raman spectra on the basis of the interaction of size-quantized electronic excitations with nonconfined acoustic vibrations. The polarization of spin-flip Raman scattering in the Faraday and Voigt configurations is analyzed in comparison with that for bulk CdS. The effective electron g factor has been measured as a function of the quantum dot size. @S0163-1829~98!03828-4#
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