Striking Enhancement and Retarding Effects in the Multi-quasi-resonance Evolvement in Electronic A → E ⊗ e Jahn-Teller Spectra

Abstract

Completely unexpected and drastic enhancement and retarding effects are predicted to occur in the multi-quasi-resonance evolvement pertinent to the electronic bandshape pertaining to the orbitally allowed intensity of cold A → E ⊗ e Jahn-Teller spectra in the strong linear regime upon distorting the frequency of the e vibration during the radiative transition, while taking a fixed value for the strength of the linear Jahn-Teller activity in the E ⊗ e system. These dramatic effects together with other strong accompanying changes resulting in the theoretically calculated A ↔ E ⊗ e spectra are in complete contradiction with the long-standing conjecture, originating in the classic paper of Longuet-Higgins et al., stating that the vibronic structure associated with the bandshape of these spectra will be virtually independent of such vibrational frequency distortions.