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arXiv · 2006.05190

Detection of antiskyrmions by topological Hall effect in Heusler compounds

Vivek Kumar·Nitesh Kumar·Manfred Reehuis·Jacob Gayles·A. S. Sukhanov·Andreas Hoser·Françoise Damay·Chandra Shekhar·Peter Adler·Claudia Felser
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Abstract

Heusler compounds having $\textit{D}$${}_{2d}$ crystal symmetry gained much attention recently due to the stabilization of a vortex-like spin texture called antiskyrmions in thin lamellae of Mn${}_{1.4}$Pt${}_{0.9}$Pd${}_{0.1}$Sn as reported in the work of Nayak $\textit{et al.}$ [Nature (London) 548, 561 (2017)]. Here we show that bulk Mn${}_{1.4}$Pt${}_{0.9}$Pd${}_{0.1}$Sn undergoes a spin-reorientation transition from a collinear ferromagnetic to a noncollinear configuration of Mn moments below 135 K, which is accompanied by the emergence of a topological Hall effect. We tune the topological Hall effect in Pd and Rh substituted Mn${}_{1.4}$PtSn Heusler compounds by changing the intrinsic magnetic properties and spin textures. A unique feature of the present system is the observation of a zero-field topological Hall resistivity with a sign change which indicates the robust formation of antiskyrmions.

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Vivek Kumar, Nitesh Kumar, Manfred Reehuis, Jacob Gayles, A. S. Sukhanov, Andreas Hoser, Françoise Damay, Chandra Shekhar, Peter Adler, Claudia Felser. 2020-06-09. Detection of antiskyrmions by topological Hall effect in Heusler compounds. https://doi.org/10.1103/physrevb.101.014424

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