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Probing hole-induced ferromagnetic exchange in magnetic semiconductors by inelastic neutron scattering

H. Kepa·Le Van Khoi·C. M. Brown·M. Sawicki·J. K. Furdyna·T. M. Giebultowicz·T. Dietl
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Abstract

The effect of hole doping on the exchange coupling of the nearest neighbor (NN) Mn pairs in Zn$_{1-x}$Mn$_x$Te is probed by inelastic neutron scattering. The difference in the NN exchange energy $ΔJ_1$ in the presence and in the absence of the holes is determined. The obtained value of $ΔJ_1$ is in good agreement with the predictions of the Zener/RKKY model, even on the insulator side of the metal-insulator transition.

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H. Kepa, Le Van Khoi, C. M. Brown, M. Sawicki, J. K. Furdyna, T. M. Giebultowicz, T. Dietl. 2003-06-07. Probing hole-induced ferromagnetic exchange in magnetic semiconductors by inelastic neutron scattering. https://doi.org/10.1103/physrevlett.91.087205

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