Title :
Magnetooptical effects induced by exchange interaction in diluted magnetic semiconductors
Author :
Savchuk, Andriy I. ; Gavaleshko, Mykola P. ; Lyakhovich, Anatoliy M. ; Nikitin, Petr I.
Author_Institution :
Dept. of Phys. Electron., Chernivtsy State Univ., Ukraine
fDate :
11/1/1993 12:00:00 AM
Abstract :
The magnetooptical effects of magnetoreflection, magnetoabsorption, and the Faraday rotation in the diluted magnetic semiconductors (DMS) Cd1-xMnxTe, Cd1-xFexTe, and Pb1-xMnxI 2 have been investigated. For CdFeTe alloy the range of temperature dependence of spin splitting and anisotropic Faraday effect have been found and interpreted by Van Vleck paramagnetism in Fe-based DMS. Results received for different DMS have been analyzed from the point of view of the relationship between constants of s, p-d exchange interaction, a degree of the Faraday rotation enhancement, and oscillator strength of excitonic transition. It is suggested that the reduction of the exchange interaction with simultaneous increasing of the Faraday effect in Pb1-xMnxI2 crystals is due to the layer structure of a lattice of this type of DMS
Keywords :
Faraday effect; cadmium compounds; exchange interactions (electron); excitons; iron compounds; lead compounds; magneto-optical effects; magnetoabsorption; manganese compounds; semimagnetic semiconductors; 5 to 65 K; Cd1-xFexTe; Cd1-xMnxTe; Faraday rotation; II-VI semiconductor; Pb1-xMnxI2; Van Vleck paramagnetism; anisotropic Faraday effect; diluted magnetic semiconductors; exchange interaction; excitonic transition; layer structure; magnetoabsorption; magnetooptical effects; magnetoreflection; oscillator strength; spin splitting; temperature dependence; Anisotropic magnetoresistance; Elementary particle exchange interactions; Faraday effect; Iron; Magnetic anisotropy; Magnetic semiconductors; Magnetooptic effects; Perpendicular magnetic anisotropy; Tellurium; Temperature dependence;
Journal_Title :
Magnetics, IEEE Transactions on
