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arXiv · 1909.11375

Magneto-optic and transverse transport properties of non-collinear antiferromagnets

Sebastian Wimmer·Sergiy Mankovsky·Ján Minár·Alexander N. Yaresko·Hubert Ebert
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Abstract

Previous studies on the anomalous Hall effect in coplanar non-collinear antiferromagnets are revisited and extended to magneto-optic properties, namely magneto-optic Kerr effect (MOKE) and X-ray magnetic dichroism (XMCD). Starting from group-theoretical considerations the shape of the frequency-dependent conductivity tensor for various actual and hypothetical spin configurations in cubic and hexagonal Mn$_3X$ compounds is determined. Calculated MOKE and X-ray dichroism spectra are used to confirm these findings and to give estimates of the size of the effects. For Mn$_3$IrPt and Mn$_3$PtRh alloys the concentration dependence of the anomalous and spin Hall conductivity is studied in addition.

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Sebastian Wimmer, Sergiy Mankovsky, Ján Minár, Alexander N. Yaresko, Hubert Ebert. 2019-09-25. Magneto-optic and transverse transport properties of non-collinear antiferromagnets. https://doi.org/10.1103/physrevb.100.214429

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