Optical and magnetotransport study of quaternary semimagnetic Hg1-x-yCdxMnySe and Hg1-x-yCdxMnyTe single crystals

Yu. I. Mazur; Georgiy G. Tarasov; E. V. Kuz'menko; S. R. Lavorik; Alexander E. Belyaev; W. Hoerstel; W. Kraak; W. Ted Masselink

doi:10.1117/12.497284

1 April 2003 Optical and magnetotransport study of quaternary semimagnetic Hg1-x-yCdxMnySe and Hg1-x-yCdxMnyTe single crystals

Yu. I. Mazur, Georgiy G. Tarasov, E. V. Kuz'menko, S. R. Lavorik, Alexander E. Belyaev, W. Hoerstel, W. Kraak, W. Ted Masselink

Author Affiliations +

Proceedings Volume 5024, Selected Papers on Optics and Photonics: Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics; (2003) https://doi.org/10.1117/12.497284
Event: International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics 2003, 2003, Moscow, Russian Federation

Abstract

The peculiarities of the exchange interaction between the carrier spin and localized spin moments of magnetic ions in narrow-gap quaternary solid solutions Hg_1-x-yCd_xMn_yTe and Hg _1-x-yCd_xMn_ySe 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 E_g and electron concentration which changes from positive α N_o = 0.15 eV to negative α N_o = -0.28 eV values which are typically accepted for wide gap semimagnetic semiconductors.

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Yu. I. Mazur, Georgiy G. Tarasov, E. V. Kuz'menko, S. R. Lavorik, Alexander E. Belyaev, W. Hoerstel, W. Kraak, and W. Ted Masselink "Optical and magnetotransport study of quaternary semimagnetic Hg1-x-yCdxMnySe and Hg1-x-yCdxMnyTe single crystals", Proc. SPIE 5024, Selected Papers on Optics and Photonics: Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, (1 April 2003); https://doi.org/10.1117/12.497284

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