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Proceedings Paper

Optical and magnetotransport study of quaternary semimagnetic Hg1-x-yCdxMnySe and Hg1-x-yCdxMnyTe single crystals
Author(s): Yu. I. Mazur; Georgiy G. Tarasov; E. V. Kuz'menko; S. R. Lavorik; Alexander E. Belyaev; W. Hoerstel; W. Kraak; W. Ted Masselink
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Paper Abstract

The peculiarities of the exchange interaction between the carrier spin and localized spin moments of magnetic ions in narrow-gap quaternary solid solutions Hg1-x-yCdxMnyTe and Hg 1-x-yCdxMnySe are studied by means of photoluminescence in magnetic field and magneto transport (Shubnikov-de Haas oscillations). It is shown that the s-p hybridization of electron wavefunctions leads to the violation of the conventional selection rules, and the spin-flip processes contribute both in the optical and in the electrical phenomena. The exchange constant α turns out in a complicated fuction α of energy gap Eg and electron concentration which changes from positive α No = 0.15 eV to negative α No = -0.28 eV values which are typically accepted for wide gap semimagnetic semiconductors.

Paper Details

Date Published: 1 April 2003
PDF: 13 pages
Proc. SPIE 5024, Selected Papers on Optics and Photonics: Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, (1 April 2003); doi: 10.1117/12.497284
Show Author Affiliations
Yu. I. Mazur, Institute of Semiconductor Physics (Ukraine)
Georgiy G. Tarasov, Institute of Semiconductor Physics (Ukraine)
E. V. Kuz'menko, Institute of Semiconductor Physics (Ukraine)
S. R. Lavorik, Institute of Semiconductor Physics (Ukraine)
Alexander E. Belyaev, Institute of Semiconductor Physics (Ukraine)
W. Hoerstel, Humboldt-Univ. zu Berlin (Germany)
W. Kraak, Humboldt-Univ. zu Berlin (Germany)
W. Ted Masselink, Humboldt-Univ. zu Berlin (Germany)


Published in SPIE Proceedings Vol. 5024:
Selected Papers on Optics and Photonics: Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics
Sergey V. Svechnikov; Mikhail Ya. Valakh, Editor(s)

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