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Absorption and Dispersion of Light by Molecular Excitons
Author(s) -
Davydov A. S.,
Myasnikov E. N.
Publication year - 1967
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19670200114
Subject(s) - exciton , refractive index , condensed matter physics , dielectric , attenuation coefficient , dispersion (optics) , materials science , phonon , absorption (acoustics) , crystal (programming language) , molecular physics , optics , physics , optoelectronics , computer science , programming language
A calculation is made of the real and imaginary parts of the dielectric permeability of molecular crystals due to exciton states, using retarded Green's functions. The interaction of excitons with acoustic and optical phonons is taken into account at different temperatures of the crystal. The dependence of the optical refractive index and the damping coefficient on the frequency of the incident light is obtained in the region of the exciton bands.