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A Theory of Two‐Exciton Light Absorption in Antiferromagnetic Dielectrics
Author(s) -
Gaididei Yu. B.,
Loktev V. M.
Publication year - 1974
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.2220620240
Subject(s) - exciton , orthorhombic crystal system , antiferromagnetism , dielectric , perpendicular , absorption spectroscopy , absorption (acoustics) , condensed matter physics , crystal (programming language) , lattice (music) , materials science , ray , molecular physics , optics , crystal structure , chemistry , physics , crystallography , optoelectronics , programming language , geometry , mathematics , computer science , acoustics
Abstract The light absorption in antiferromagnetic dielectrics by the creation of two Frenkel excitons in the crystal is considered. It is shown that the absorption lines accompanied by the formation of bound states split into three perpendicularly polarized components. The form of the absorption spectrum both in the presence and absence of bound states for different polarizations of incident light, as well as the ratio of the intensities of the components are found. The object of the investigation is a crystal with a body‐centered orthorhombic lattice.