Influence of the impurity potential on the phase separation in doped antiferromagnetic semiconductors

Abstract At moderate charge carrier densities the crystal considered in the jellium model may go over into the phase-separated state with the insulating antiferromagnetic phase and highly-conductive ferromagnetic state. If one takes into account the real electrostatic potential of ionized donors (acceptors), the phase-separated state competes with the Mott insulating state. In the case of the single-electron donors, the phase separated state is unlikely to exist. But it certainly can exist in the case of the double-electron donors.