Magnetotransport and magnetic properties of the layered noncollinear antiferromagnetic Cr2Se3 single crystals. (27th August 2020)

• Record Type: Journal Article
• 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
• Is Part Of: Journal of physics. Volume 32:Number 47(2020)
• Publication Date: 2020-08-27
• Subjects: noncolinear antiferromagnetism -- butterfly magnetoresistance -- van de Waals magnet -- Cr2Se3 single crystal; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/abaeab
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: We report on the growth of high-quality stoichiometric layered Cr2 Se3 single 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 ( T N ), however, the field-cooled out-of-plane magnetization at 500 Oe and 10 K (∼0.24 μ B /f.u.) is approximately 15 times larger than that of the in-plane one, indicating strong c -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 below T N and show butterfly shapes for T < 10 K and couple with the magnetic hysteresis M ( 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.