Authors
Citation
P. Petelenz, VIBRONIC COUPLING WITH LOW-FREQUENCY VIBRATIONS IN QUASI-FORBIDDEN FRENKEL EXCITON-STATES, Chemical physics letters, 229(4-5), 1994, pp. 439-442
Citations number
12
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
ISSN journal
00092614
Volume
229
Issue
4-5
Year of publication
1994
Pages
439 - 442
Database
ISI
SICI code
0009-2614(1994)229:4-5<439:VCWLVI>2.0.ZU;2-N
Abstract
A simple dimer model is used to demonstrate that in weakly allowed Fre
nkel exciton states, where the factor-group splitting is largely due t
o charge transfer interactions, the exciton-phonon coupling constant m
ay be considerably different for the two Davydov components. The model
is applied to the SI transition of the naphthalene crystal and sugges
ts a smaller Davydov splitting than normally assumed (60 cm(-1) rather
than 150 cm(-1)).