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arXiv 2001.02601cond-mat.str-el
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Mn $_3$ Ge的基态磁结构

Ground state magnetic structure of Mn$_3$Ge

J. -R. Soh, F. de Juan, N. Qureshi, H. Jacobsen, H. -Y. Wang, Y. -F. Guo, A. T. Boothroyd

摘要:

我们用球形中子极化仪研究了六方晶系半金属Mn $_3$ Ge中Mn自旋的磁结构,这种材料表现出很大的本征反常霍尔效应。我们的极化数据的分析发现一个强烈的偏好与$E_{1g}$对称性相对于$D_{6h}$点群的自旋结构。我们表明,弱铁磁性是所观察到的磁结构的对称性的必然结果,并需要六阶各向异性选择一个独特的基态。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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