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Phys Rev Lett. 2014 Jan 10;112(1):017205. Epub 2014 Jan 10.

Anomalous Hall effect arising from noncollinear antiferromagnetism.

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1
Department of Physics, University of Texas at Austin, Austin, Texas 78712, USA.

Abstract

As established in the very early work of Edwin Hall, ferromagnetic conductors have an anomalous Hall conductivity contribution that cannot be attributed to Lorentz forces and therefore survives in the absence of a magnetic field. These anomalous Hall conductivities are normally assumed to be proportional to magnetization. We use symmetry arguments and first-principles electronic structure calculations to counter this assumption and to predict that Mn3Ir, a high-temperature antiferromagnet that is commonly employed in spin-valve devices, has a large anomalous Hall conductivity.

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