Anomalous Hall effect in the noncollinear antiferromagnet Mn5Si3

Abstract

Metallic antiferromagnets with noncollinear orientation of magnetic moments provide a playground for investigating spin-dependent transport properties by analysis of the anomalous Hall effect. The intermetallic compound Mn5Si3 is an intinerant antiferromagnet with collinear and noncollinear magnetic structures due to Mn atoms on two inequivalent lattice sites. Here, magnetotransport measurements on polycrystalline thin films and a single crystal are reported. In all samples, an additional contribution to the anomalous Hall effect attributed to the noncollinear arrangment of magnetic moments is observed. Furthermore, an additional magnetic phase between the noncollinear and collinear regimes above a metamagnetic transition is resolved in the single crystal by the anomalous Hall effect.

7 pages, 4 figures

References in corpus (8)

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• Linear magnetization dependence of the intrinsic anomalous Hall effect
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• Controllable chirality-induced geometrical Hall effect in a frustrated highly-correlated metal
• Berry-phase effects and electronic dynamics in noncollinear antiferromagnetic texture
• Hanle-effect measurements of spin injection from Mn5Ge3C0.8/Al2O3-contacts into degenerately doped Ge channels on Si

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