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

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 ${\sigma }_{xy}\sim 500(\Omega \text{cm}{)}^{-1}$, 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.

arXiv comment9 pages and 9 figures including supplement

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Cited by in corpus (3)

• Diverse Magnetic Phase Diagram and Anomalous Hall Effect in Antiferromagetic LuMn${}_6$Sn${}_6$
• Exploring strong electronic correlations in the breathing kagome metal Fe${}_3$Sn
• Tunable topological phase in 2D ScV${}_6$Sn${}_6$ kagome material