| Current heating of a magnetic 2DEG in HgMnTe/HgCdTe quantum wells (2003) | |||||||||
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.. Comment: 4 pages, 5 figures, 2 tables | |||||||||
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