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Vibronic Spectra of Molecular Systems
Author(s) -
Zgierski M. Z.,
Henneker W. H.
Publication year - 1978
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220870231
Subject(s) - vibronic spectroscopy , exciton , intramolecular force , spectral line , molecule , unit (ring theory) , phonon , vibronic coupling , generalization , molecular physics , molecular vibration , materials science , chemistry , atomic physics , physics , condensed matter physics , quantum mechanics , mathematics , mathematical analysis , mathematics education
Abstract A model for investigation of the vibronic spectra of molecular crystals and polymers is presented. The model assumes that Frenkel excitons and intramolecular phonons (vibrational excitons) move independently and permits a study of two interacting Frenkel exciton bands in a crystalline system containing one molecule per unit cell. In particular the hypo‐ and hyperchromic effects on intensity distributions among different vibronic bands are investigated. A possible generalization of the model to crystalline systems of more than one molecule per unit cell is indicated.