Magnetotransport and magnetic properties of the layered noncollinear antiferromagnetic Cr2Se3single crystals

• Published in: Journal of physics. Condensed matter Vol. 32; no. 47
• Main Authors: Wu, Jin, Zhang, Chuan-Lin, Yan, Jian-Min, Chen, Lei, Guo, Lei, Chen, Ting-Wei, Gao, Guan-Yin, Fei, Linfeng, Zhao, Weiyao, Chai, Yang, Zheng, Ren-Kui
• Format: Journal Article
• Language: English
• Published: 11.11.2020
• ISSN: 1361-648X
• DOI: 10.1088/1361-648X/abaeab

We report on the growth of high-quality stoichiometric layered Cr2Se3single crystals with metallic and noncollinear antiferromagnetic ground state using the chemical vapor transport (CVT) method. The crystals show weak ferromagnetism in the in-plane and out-of-plane directions below the Neél temperature (TN), however, the field-cooled out-of-plane magnetization at 500 Oe and 10 K (∼0.24μB/f.u.) is approximately 15 times larger than that of the in-plane one, indicating strongc-axis easy uniaxial magnetic anisotropy, which is further supported by the in-plane and out-of-plane isothermal anisotropic magnetic hysteresis loops and the angular dependent magnetoresistance (MR). The latter also reveals a decrease of the coercive field of the crystal upon the tilting of the weak ferromagnetic easy axis away from the direction of the magnetic field. Further, the out-of-plane isothermal MR are negative belowTNand show butterfly shapes forT< 10 K and couple with the magnetic hysteresisM(H) loop. These results may help researchers better understand the interplay between the weak ferromagnetism and the magnetotransport properties of 2D itinerant noncollinear antiferromagnetic systems.