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
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.
