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arXiv · 2308.14826

Large anomalous Hall effect in single crystals of the kagome Weyl ferromagnet Fe$_3$Sn

Bishnu P. Belbase·Linda Ye·Bishnu Karki·Jorge I. Facio·Jhih-Shih You·Joseph G. Checkelsky·Jeroen van den Brink·Madhav Prasad Ghimire
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Abstract

The material class of kagome metals has rapidly grown and has been established as a field to explore the interplay between electronic topology and magnetism. In this work, we report a combined theoretical and experimental study of the anomalous Hall effect of the ferromagnetic kagome metal Fe$_3$Sn. The compound orders magnetically at 725 K and presents an easy-plane anisotropy. Hall measurements in single crystals below room temperature yield an anomalous Hall conductivity $\sigma_{xy}\sim500\,(\Omega\textrm{cm})^{-1}$, which is found to depend weakly on temperature. This value is in good agreement with the band-intrinsic contribution obtained by density-functional calculations. Our calculations also yield the correct magnetic anisotropy energy and predict the existence of Weyl nodes near the Fermi energy.

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Bishnu P. Belbase, Linda Ye, Bishnu Karki, Jorge I. Facio, Jhih-Shih You, Joseph G. Checkelsky, Jeroen van den Brink, Madhav Prasad Ghimire. 2023-08-28. Large anomalous Hall effect in single crystals of the kagome Weyl ferromagnet Fe$_3$Sn. https://doi.org/10.1103/physrevb.108.075164

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