Comments on exciton phonon coupling: Temperature dependence
- 1 August 1976
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 65 (3), 1042-1052
- https://doi.org/10.1063/1.433182
Abstract
We discuss upper bounds to the free energy of an excitoninteracting with a lattice of phonons with a linear coupling. From these upper bounds, we find the effective number of phonons clothing an exciton to vary with exciton bandwidth and temperature. The possibility of an a b r u p t transition from a delocalized to a localized exciton with an increase in temperature is discussed.Keywords
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