Polarized light absorption of the magnetic semiconductor CdCr2Se4

The absorption of polarized light in CdCr2Se4 thin films in the spectral region 10000 to 22000 cm-1 at different temperatures is investigated. Through the whole spectral region the absorption intensity differs for right-handed and left-handed circularly polarized light or for parallel and perpendicular linearly polarized light. The character of the temperature and polarization dependence of the absorption intensity is different for different parts of the spectrum. The observed absorption is considered as a sum of the interband transitions and the transitions between localized states. (author)