Large anomalous Hall effect in ferromagnetic Weyl semimetal candidate PrAlGe

Biao Meng; Hao Wu; Yang Qiu; Chunlei Wang; Yong Liu; Zhengcai Xia; Songliu Yuan; Haixin Chang; Zhaoming Tian

doi:10.1063/1.5090795

APL Materials (May 2019)

Large anomalous Hall effect in ferromagnetic Weyl semimetal candidate PrAlGe

Biao Meng,
Hao Wu,
Yang Qiu,
Chunlei Wang,
Yong Liu,
Zhengcai Xia,
Songliu Yuan,
Haixin Chang,
Zhaoming Tian

Affiliations

Biao Meng: School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
Hao Wu: Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
Yang Qiu: School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People’s Republic of China
Chunlei Wang: School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People’s Republic of China
Yong Liu: School of Physics,Wuhan University, Wuhan 430074, People’s Republic of China
Zhengcai Xia: School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
Songliu Yuan: School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
Haixin Chang: Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
Zhaoming Tian: School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China

DOI: https://doi.org/10.1063/1.5090795
Journal volume & issue: Vol. 7, no. 5
pp. 051110 – 051110-6

Abstract

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We present the structure and anisotropic magnetic and electrical transport properties on the flux-grown PrAlGe single crystal, a recently proposed magnetic Weyl semimetal candidate. From the powder and single-crystal x-ray diffraction analysis, the grown crystal is revealed to crystallize in tetragonal LaPtSi-type structure with space group of I41md. The PrAlGe exhibits strong Ising-type magnetic anisotropy with ferromagnetic moments ∼2.32μB/Pr along easy c-axis below transition temperature Tc ∼ 15 K. Accordingly, anomalous Hall effect (AHE) is observed for field (H) along c axis in contrast to a axis, and large anomalous Hall conductivity value reaches up to ∼680 Ω−1 cm−1 close to the theoretical expected value based on intrinsic Berry-curvature mechanism. Moreover, the linear scaling behaviors between the anomalous Hall resistivity and longitudinal resistivity also support the intrinsic Karplus-Luttinger mechanism as a dominant role on the observed AHE rather than extrinsic scattering mechanism.

Published in APL Materials

ISSN: 2166-532X (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology; Science: Physics
Website: http://aplmaterials.aip.org

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