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arXiv · 1902.04357

The anomalous Hall effect in non-collinear antiferromagnetic Mn$_{3}$NiN thin films

David Boldrin·Ilias Samathrakis·Jan Zemen·Andrei Mihai·Bin Zou·Bryan Esser·Dave McComb·Peter Petrov·Hongbin Zhang·Lesley F. Cohen
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Abstract

We have studied the anomalous Hall effect (AHE) in strained thin films of the frustrated antiferromagnet Mn$_{3}$NiN. The AHE does not follow the conventional relationships with magnetization or longitudinal conductivity and is enhanced relative to that expected from the magnetization in the antiferromagnetic state below $T_{\mathrm{N}} = 260$\,K. This enhancement is consistent with origins from the non-collinear antiferromagnetic structure, as the latter is closely related to that found in Mn$_{3}$Ir and Mn$_{3}$Pt where a large AHE is induced by the Berry curvature. As the Berry phase induced AHE should scale with spin-orbit coupling, yet larger AHE may be found in other members of the chemically flexible Mn$_{3}A$N structure.

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David Boldrin, Ilias Samathrakis, Jan Zemen, Andrei Mihai, Bin Zou, Bryan Esser, Dave McComb, Peter Petrov, Hongbin Zhang, Lesley F. Cohen. 2019-02-12. The anomalous Hall effect in non-collinear antiferromagnetic Mn$_{3}$NiN thin films. https://doi.org/10.1103/physrevmaterials.3.094409

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