论文标题
在磁性Weyl半分CO3SN2S2的磁化和电子传输的各向异性上
On the anisotropies of magnetization and electronic transport of magnetic Weyl semimetal Co3Sn2S2
论文作者
论文摘要
CO3SN2S2是一种带有Kagome晶格的准二维系统，最近已被发现为磁性Weyl semimetal。在这项工作中，研究了CO3SN2S2的磁化和运输特性的各向异性。 The high field measurements reveal a giant magnetocrystalline anisotropy with an out-of-plane saturation field of 0.9 kOe and an in-plane saturation field of 230 kOe at 2 K, showing a magnetocrystalline anisotropy coefficient Ku up to 8.3 * 10^5 J m-3, which indicates that it is extremely difficult to align the small moment of 0.29 μB/Co on the kagome lattice从C轴到AB平面。霍尔电导率的平面外角依赖性进一步揭示了浆果曲率和铁磁性的强烈各向异性，并且两者的矢量方向总是彼此平行。对于平面的情况，我平行于A和我垂直的案例的纵向和横向测量表明，Kagome晶格上的运输是各向同性的。这些结果为磁性Weyl半分CO3SN2S2的磁化和运输行为提供了基本的理解。
Co3Sn2S2, a quasi-two-dimensional system with kagome lattice, has been found as a magnetic Weyl semimetal recently. In this work, the anisotropies of magnetization and transport properties of Co3Sn2S2 were investigated. The high field measurements reveal a giant magnetocrystalline anisotropy with an out-of-plane saturation field of 0.9 kOe and an in-plane saturation field of 230 kOe at 2 K, showing a magnetocrystalline anisotropy coefficient Ku up to 8.3 * 10^5 J m-3, which indicates that it is extremely difficult to align the small moment of 0.29 μB/Co on the kagome lattice from c axis to ab plane. The out-of-plane angular dependences of Hall conductivity further reveal strong anisotropies in Berry curvature and ferromagnetism, and the vector directions of both are always parallel with each other. For in-plane situation, the longitudinal and transverse measurements for both I parallel a and I perpendicular a cases show that the transport on the kagome lattice is isotropic. These results provide essential understanding on the magnetization and transport behaviors for the magnetic Weyl semimetal Co3Sn2S2.
