Raman Scattering from Vibronic Levels of a Jahn-Teller-Distorted Complex

Abstract

Raman-scattering transitions have been observed between the hindered rotational states of the Jahn-Teller-distorted ${}_{}{}^2{}_{}{}^{}E_{\mathrm{g}}^{}{}_{}{}^{}$ ground state of ${\mathrm{Cu}}^{2+}$ in CaO. Impurity-induced scattering from the CaO vibrations was also observed. The results are in good agreement with the cluster model for the low-lying vibronic states.