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Interband and Exciton Effects on Faraday Rotation near the Absorption Edge of CuCl
Author(s) -
Suga S.,
Koda T.,
Mitani T.
Publication year - 1973
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.2220550137
Subject(s) - faraday effect , exciton , rotation (mathematics) , condensed matter physics , absorption edge , absorption (acoustics) , semiconductor , faraday rotator , enhanced data rates for gsm evolution , spectral line , physics , faraday cage , absorption spectroscopy , materials science , chemistry , atomic physics , optics , magnetic field , band gap , optoelectronics , quantum mechanics , geometry , mathematics , telecommunications , computer science
The oscillatory behaviour of the Faraday rotation spectra near the absorption edge of CuCl is interpreted in terms of the interband and exciton effects. According to this interpretation, the positive Faraday rotation in low energy regions is predominantly due to the interband effect, while the large negative rotation a t energies just below the exciton absorption band is ascribed to the non‐rigid shift contribution of the exciton effect. Calculation based on this model is in satisfactory agreement with experiment. It is further suggested that the same effect will be also responsible for the similar oscillatory behaviour of the Faraday rotation observed in several semiconductors such as GaSb, GaAs, and CdTe.