Magnetotransport properties and giant anomalous Hall angle in half-Heusler compound TbPtBi

Abstract

Magnetic lanthanide half-Heuslers ($R$PtBi; $R$ being the lanthanide) represent an attractive subgroup of the Heusler family and have been identified as ideal candidates for time reversal symmetry breaking topological Weyl semimetals. In this paper, we present the detailed analysis of the magnetotransport properties of frustrated antiferromagnet TbPtBi. This material shows large, non-saturating magnetoresistance (MR) with unusual magnetic field dependence. The MR of TbPtBi is significantly anisotropic with respect to the magnetic field, applied along different crystallographic directions and indicates the anisotropic nature of the Fermi surface. The chiral anomaly induced negative longitudinal magnetoresistance confirms the presence of Weyl fermions. At low temperature, Berry phase driven large anomalous Hall conductivity has been observed. The calculated anomalous Hall angle is the largest reported so far.

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Cited by in corpus (7)

• Giant $c$-axis nonlinear anomalous Hall effect in T${}_d$-MoTe${}_2$ and WTe${}_2$
• Topological Hall effect in the antiferromagnetic Dirac semimetal EuAgAs
• Anomalous Hall effect in half-metallic Heusler compound Co${}_2$Ti$X$ ($X$=Si, Ge)
• Thickness dependent tuning of the Berry curvature in a ferromagnetic Weyl semimetal
• Anomalous Hall effect and negative longitudinal magnetoresistance in half-Heusler topological semimetal candidates TbPtBi and HoPtBi
• Recent advancements in the study of intrinsic magnetic topological insulators and magnetic Weyl semimetals
• Large anomalous Hall angle in a topological semimetal candidate TbPtBi