论文标题
Mn $ _3 $ GE的基态磁结构
Ground state magnetic structure of Mn$_3$Ge
论文作者
论文摘要
我们已经使用球形中子极化法研究了六边形半学MN $ _3 $ GE中Mn旋转的磁性结构，该旋转表现出较大的固有异常霍尔效应。我们对偏光数据的分析发现，相对于$ d_ {6h} $ point组，具有$ e_ {1g} $对称性的旋转结构的强烈偏爱。我们表明，弱铁磁论是观察到的磁性结构对称性的必然结果，并且需要第六阶各向异性来选择独特的基态。
We have used spherical neutron polarimetry to investigate the magnetic structure of the Mn spins in the hexagonal semimetal Mn$_3$Ge, which exhibits a large intrinsic anomalous Hall effect. Our analysis of the polarimetric data finds a strong preference for a spin structure with $E_{1g}$ symmetry relative to the $D_{6h}$ point group. We show that weak ferromagnetism is an inevitable consequence of the symmetry of the observed magnetic structure, and that sixth order anisotropy is needed to select a unique ground state.
