Fizika Nizkikh Temperatur: Volume 48, Number 2 (February 2022), p. 191-198 ( to contents , go back )
Local dynamical characteristics of a molecular aggregate under the action of the bichromatic electromagnetic field
I. Yu. Ropakova1 and A. A. Zvyagin2,3
1Institute for Scintillation Materials, STC “Institute for Single Crystals” of the National Academy of Sciences of Ukraine, Kharkiv 61001, Ukraine
2B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine
Kharkiv 61103, Ukraine
3V. N. Karazin Kharkiv National University, Kharkiv 61022, Ukraine
Received September 20, 2021, published online December 24, 2021
Several dynamical characteristics of the impurity coupled to the linear molecular aggregate under the action of the bichromatic electromagnetic field are calculated. Both the exciton band and the local levels, caused by the impurity, can contribute to the local dynamical characteristics of the impurity. We have shown that the bichromatic electromagnetic field produces combined resonances, which manifest themselves in all dynamical characteristics ofthe system. We also have shown that one can observe resonance features of the dynamical characteristics at frequencies (or wavelengths) in the diapason far beyond own frequencies of the molecular aggregate and the impurity.
Key words: molecular aggregate, bichromatic electromagnetic field, local dynamical characteristics, combined resonance.