https://doi.org/10.15407/spqeo2.04.037
PACS: 72.15.Gd, 72.20. My, 73.61.Ga.
Quaternary semimagnetic Hg 1-x-yCdxMnySe crystals for optoelectronic application
Yu.I. Mazur, G.G. Tarasov, E.V. Kuz'menko, A.E. Belyaev, W. Hoerstel*, W. Kraak*, W.T. Masselink
Semiconductor Physics, Quantum Electronics and Optoelectronics - 1999. - 2, ¹4.-P.37-45.-Engl. Il.: 8. Ref.: 32.
Abstract. The peculiarities of the exchange interaction between the carrier spin and localized spin moments of magnetic ions in the close vicinity of semimetal-semiconductor transition have been studied on the exampleû of semimagnetic quaternary solid solution Hg1-x-yCdxMnySe (x = 0.10, y = 0.02, Eg = 45 meV) by means of Shubnikov-de Haas oscillations. It is shown that due to the s-p hybridization of electron wavefunctions the exchange constant a turns out in a complicated function of energy gap Eg and electron concentration which changes from positive = 0.15 eV to negative = -0.28 eV values which are typically accepted for wide gap semimagnetic semiconductors.
Keywords: semimagnetic semiconductor, constant of exchange interaction, semimetal-semiconductor transition.
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