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Infrared absorption by excitons due to photoionization and intraband lattice scattering
Author(s) -
Moskalenko S. A.,
Khadshi P. I.
Publication year - 1966
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.19660180136
Subject(s) - exciton , photoionization , biexciton , scattering , infrared , phonon , physics , lattice (music) , absorption (acoustics) , condensed matter physics , atomic physics , quantum mechanics , optics , ion , ionization , acoustics
A quantum mechanical theory is developed for infrared absorption by excitons due to photoionization and intraband lattice scattering. The theory involves the interaction of the excitons with the acoustic and optical phonons. The Maxwellian and Bose‐Einstein distribution functions and the possible locations of the simple exciton band extremum are taken into account. The effect of the exciton photoionization is observable at the threshold frequency at comparatively low exciton concentrations.