Very Strong Enhancement of the Herzberg-Teller Induced Forbidden Intensity in Electronic Jahn-Teller Spectra
✍ Scribed by M. Pyernik; E. Perets; B.E. Scharf
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 713 KB
- Volume
- 169
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
Novel, important aspects pertaining to the Herzberg-Teller theory vis-á-vis the Jahn-Teller spectra of spin-allowed (A \leftrightarrow E \otimes e) electronic systems are presented in this paper. Our theoretical investigation reveals that the total strength of the first-order Herzberg-Teller induced forbidden intensity associated with the Jahn-Teller spectra of the cold reverse (E \times e \rightarrow A) electronic transition that is promoted by the interstate vibronic interactions in the pertinent (\mathrm{e}) vibrational mode is dramatically enhanced via the action of the linear Jahn-Teller interactions in the radiatively engaged (E \otimes e) system. An enhancement by two orders of magnitude is expected for Jahn-Teller electronic energy stabilization amounting to 50 vibrational quanta. On the other hand, in contradistinction, the total strength of such Herzberg-Teller induced forbidden intensity in the JahnTeller spectra of the complementary cold forward (A \rightarrow E \otimes e) electronic transition is completely independent of the pertinent Jahn-Teller interactions. © 1995 Academic Press, Inc.