Abstract
An analytical expression is derived for the decrease in the absorption cross section that occurs when two molecular electronic states are coupled by spin-orbit coupling. The loss of intensity, or interference dip, is common in the spectra of metal compounds. The derivation is based on a coupling of a single forbidden donor state to a broadened harmonic acceptor potential, and leads to simple analytical expressions. The new expressions give line shape functions different from those in the commonly used Fano antiresonance interpretation and are based on interpretable molecular properties.
- Received 30 May 2000
DOI:https://doi.org/10.1103/PhysRevLett.85.5304
©2000 American Physical Society