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

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3399

Lastpage

3401

Abstract

The magnetooptical effects of magnetoreflection, magnetoabsorption, and the Faraday rotation in the diluted magnetic semiconductors (DMS) Cd_1-xMn_xTe, Cd_1-xFe_xTe, and Pb_1-xMn_xI 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 Pb_1-xMn_xI₂ 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; Cd_1-xFe_xTe; Cd_1-xMn_xTe; Faraday rotation; II-VI semiconductor; Pb_1-xMn_xI₂; 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.280827

Filename

280827