  Magnetotransport measurements are presented on paramagnetic (Hg,Mn)Te quantum
wells (QWs) with an inverted band structure. Gate-voltage controlled density
dependent measurements reveal an unusual behavior in the transition regime from
n- to p-type conductance: A very small magnetic field of approximately 70 mT is
sufficient to induce a transition into the nu = -1 quantum Hall state, which
extends up to at least 10 Tesla. The onset field value remains constant for a
unexpectedly wide gate-voltage range. Based on temperature and angle-dependent
magnetic field measurements we show that the unusual behavior results from the
realization of the quantum anomalous Hall state in these magnetically doped
QWs.
