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arXiv · 2011.06864

Large anomalous Hall angle in a topological semimetal candidate TbPtBi

Jie Chen·Hang Li·Bei Ding·Hongwei Zhang·Enke Liu·Wenhong Wang
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Abstract

The magnetotransport properties in antiferromagnetic half-Heusler single crystals of TbPtBi, a magnetic-field-induced topological semimetal with simple band structure, are investigated. We found that a nonmonotonic magnetic field dependence of the anomalous Hall resistivity in a high magnetic field (B>7T), which come from the change of band structure induced by the Zeeman-like splitting when applying the external magnetic field. The experiment results show that credible anomalous Hall resistivity and conductivity reach up to 0.6798m{\Omega}cm and 125{\Omega}-1cm-1, respectively. A large AHA up to 33% is obtained in TbPtBi, which is comparable to typical ferromagnetic Weyl semimetal. The analysis of results show it should be attributed to topological band around EF and low carrier density.

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Jie Chen, Hang Li, Bei Ding, Hongwei Zhang, Enke Liu, Wenhong Wang. 2020-11-13. Large anomalous Hall angle in a topological semimetal candidate TbPtBi. https://doi.org/10.1063/5.0033707

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