Field-induced magnetic phase transitions and the resultant giant anomalous Hall effect in the antiferromagnetic half-Heusler compound DyPtBi

Published

September 21, 2020

Author(s)

H. Zhang, Y. L. Zhu, Yiming Qiu, W. Tian, H. B. Cao, Z. Q. Mao, X. Ke

Abstract

Rare earth half-Heuslers LnPtBi have been proposed to be candidates of topological materials. These materials enable the integration of magnetism with nontrivial band topology, thus offering great opportunities to search for exotic quantum phenomena. In this paper, we report unusual magnetic and transport properties of antiferromagnetic DyPtBi. We show that DyPtBi hosts a delicate balance between two different magnetic ground states, which can be controlled by a moderate magnetic field. Furthermore, it exhibits giant anomalous Hall effect (ς^A = 1540 Ω}^?1cm^?1, 0_AHE = 24 %) in a field-induced Type-I spin structure, presumably attributed to the enhanced Berry curvature associated with avoided band-crossings near the Fermi energy and /or non-zero spin chirality. The latter mechanism points DyPtBi towards a rare potential realization of anomalous Hall effect in an antiferromagnet with face-center-cubic lattice that was proposed in [Physical Review Letters 87, 116801 (2001)].

Citation

Physical Review B

Volume

102

Issue

9

Pub Type

Journals

Download Paper

https://doi.org/10.1103/physrevb.102.094424

Local Download

Keywords

magnetic phase transition, neutron scattering

Citation

Zhang, H. , Zhu, Y. , Qiu, Y. , Tian, W. , Cao, H. , Mao, Z. and Ke, X. (2020), Field-induced magnetic phase transitions and the resultant giant anomalous Hall effect in the antiferromagnetic half-Heusler compound DyPtBi, Physical Review B, [online], https://doi.org/10.1103/physrevb.102.094424, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=930768 (Accessed November 25, 2025)