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Phys Rev Lett. 2001 Sep 10;87(11):116801. Epub 2001 Aug 23.

Orbital ferromagnetism and anomalous Hall effect in antiferromagnets on the distorted fcc lattice.

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Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo, 113-8656 Japan.


The Berry phase due to the spin wave function gives rise to the orbital ferromagnetism and anomalous Hall effect in the noncoplanar antiferromagnetic ordered state on face-centered-cubic (fcc) lattice once the crystal is distorted perpendicular to the (1,1,1) or (1,1,0) plane. The relevance to the real systems gamma-FeMn and NiS2 is also discussed.

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