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Paramagnetic solutions of the ionic Hubbard model at half-filling indimensions $D>2$ indicate that the band and the Mott insulator phases areseparated by a metallic phase. We present zero-temperature dynamical mean-fieldtheory solutions, which include antiferromagnetic long-range order, and showthat the one-particle spectral functions always possess an energy gap andtherefore the system is insulating for all interaction strengths. The staggeredcharge density modulation coexists with antiferromagnetic long-range order ofN\'eel type.

Insulating behavior with spin and charge order in the ionic Hubbard model