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Title of article :
Electron cyclotron resonance in In1−xMnxAs
Author/Authors :
Y.H Matsuda، نويسنده , , T Ikaida، نويسنده , , N Miura، نويسنده , , M.A. Zudov، نويسنده , , J Kono، نويسنده , , H Munekata، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2001
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Abstract :
We have made the first observation of cyclotron resonance in In1−xMnxAs alloys. Our data unambiguously show that the effective mass of electrons systematically decreases with increasing Mn concentration x. Using an 8-band k·p method, we demonstrate that this mass reduction is a combined effect of (1) a decrease of the band gap and (2) an effective reduction of the momentum matrix element P due to the sp–d hybridization. We also observed a significant mass decrease with decreasing temperature, its temperature coefficient slightly depending on x. The temperature dependent sp–d-interaction-enhanced Landau level spin splitting cannot account for this unusual temperature dependence.
Keywords :
Diluted magnetic semiconductors , High magnetic fields , Cyclotron resonance
Journal title :
Physica E Low-dimensional Systems and Nanostructures
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Link To Document :