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Magnetic scattering of spin polarized carriers in (In,Mn)Sb dilute magnetic semiconductor

M. Csontos·T. Wojtowicz·X. Liu·M. Dobrowolska B. Jankó·J. K. Furdyna·G. Mihály
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Abstract

Magnetoresistance measurements on the magnetic semiconductor (In,Mn)Sb suggest that magnetic scattering in this material is dominated by isolated Mn$^{2+}$ ions located outside the ferromagnetically-ordered regions when the system is below $T_{c}$. A model is proposed, based on the $p$-$d$ exchange between spin-polarized charge carriers and localized Mn$^{2+}$ ions, which accounts for the observed behavior both below and above the ferromagnetic phase transition. The suggested picture is further verified by high-pressure experiments, in which the degree of magnetic interaction can be varied in a controlled way.

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M. Csontos, T. Wojtowicz, X. Liu, M. Dobrowolska B. Jankó, J. K. Furdyna, G. Mihály. 2005-05-24. Magnetic scattering of spin polarized carriers in (In,Mn)Sb dilute magnetic semiconductor. https://doi.org/10.1103/physrevlett.95.227203

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