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Current heating of a magnetic 2DEG in HgMnTe/HgCdTe quantum wells

Y. S. Gui·C. R. Becker·J. Liu·M. Koenig·V. Daumer·M. N. Kiselev·H. Buhmann·L. W. Molenkamp
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Abstract

Heating caused by electrons with excess kinetic energy has been investigated in a magnetic two-dimensional electron gas, M2DEG, in HgMnTe/HgCdTe(001) quantum wells. The temperature of the Mn ions, T_Mn, has been determined by the node positions in the beating pattern in Shubnikov-de Haas oscillations.The experimental dependence of T_Mn on current and therefore on electron temperature, is in excellent agreement with a rate equation model. Results with this model show that the energy transfer rate from the electrons to the Mn system is proportional to the Mn concentration.

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Y. S. Gui, C. R. Becker, J. Liu, M. Koenig, V. Daumer, M. N. Kiselev, H. Buhmann, L. W. Molenkamp. 2003-12-17. Current heating of a magnetic 2DEG in HgMnTe/HgCdTe quantum wells. https://arxiv.org/abs/cond-mat/0312424

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