论文标题
大型各向异性拓扑厅效果
Large anisotropic topological Hall effect in a hexagonal non-collinear magnet Fe5Sn3
论文作者
论文摘要
我们报告了六边形非电视磁体Fe5SN3单晶中大型各向异性拓扑效应（The）的观察。发现当磁场h垂直于BC平面（H \ Perp BC平面）时，拓扑厅电阻率的符号为负，但是，当h平行于c轴（H \ h \ Parallel c轴）时，它会变化为负为阳性。拓扑厅电阻率的值随温度的升高而增加，并在350 K处分别达到约-2.12μCM（H \ PERP BC-PLANE）和0.5μmΩcm（H \ Parallel C轴）。对测量数据的定量分析表明，观察到的各向异性可能源自垂直于磁场和与C轴平行的磁场引起的相反标量旋转手性。
We report the observation of a large anisotropic topological Hall effect (THE) in the hexagonal non-collinear magnet Fe5Sn3 single crystals. It is found that the sign of the topological Hall resistivity is negative when a magnetic field H perpendicular to the bc-plane (H\perp bc-plane), however, it changes form negative to positive when H parallel to the c-axis (H\parallel c-axis). The value of topological Hall resistivity increased with the increasing temperature and reached approximately -2.12 μΩcm (H\perp bc-plane) and 0.5 μΩcm (H\parallel c-axis) at 350 K, respectively. Quantitative analyses of the measured data suggest that the observed anisotropic THE may originate from the opposite scalar spin chirality induced by the magnetic fields perpendicular and parallel to the c-axis, respectively.
