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Canted Eu magnetic structure in EuMnSb_2

机译：eumsb_2中的倾斜欧盟磁结构

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摘要

Magnetic ordering breaks the time-reversal symmetry, greatly impacting material topological properties. We report the investigation of the magnetic properties of the layered EuMnSb_2, which has two sets of magnetic sublattices. Both the magnetization and electrical resistivity reveal two phase transitions with one at T_(N.Eu) ～ 21 K and the other at T_(N.Mn) ～ 346 K. Single crystal neutron diffraction refinement indicates that both transitions are originated from magnetic ordering. Below T_(N.Mn), the Mn sublattice forms the C-type antiferromagnetic (AFM) structure with moments [(4.5 ± 0.6)μ_B at 7 K] pointing along the a axis. Below T_(N.Eu). the Eu sublattice forms the canted A-type AFM structure with moments [(5.9 ±0.8)μ_B at 7 K] lying in the ac plane but pointing (41 ± 1)° away from the a axis. Quantitative analysis indicates that the spin-spin correlation length, while anisotropic. has long-range characteristic in all directions for both the Eu and Mn sublattices.
机译：磁性排序破坏了时间反转对称性，极大地影响了材料拓扑性质。我们报告了分层EumnsB_2的磁性的研究，该磁性特性具有两组磁子图示。磁化和电阻率均显示在T_（n.eu）〜21k处的一个在t_（n.mn）〜346k处的两个相变。单晶中子衍射细化表明两个过渡源自磁性排序。下面的T_（n.mn），Mn Sublattice形成C型反铁磁性（AFM）结构，沿轴指向的瞬间[（4.5±0.6）μ_b]。以下t_（n.eu）。欧盟分区形成倾斜的A型AFM结构，其瞬间[（5.9±0.8）μ_b，7 k]，位于交流平面中，但远离轴的距离（41±1）°。定量分析表明旋转旋转相关长度，同时各向异性。对于欧盟和MN Sublattices的所有方向都有远程特征。

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  • 来源
    《Physical review》 |2020年第22期|224422.1-224422.7|共7页
  • 作者

    Dongliang Gong; Silu Huang; Feng Ye; Xin Gui; Jiandi Zhang; Weiwei Xie; Rongying Jin;

  • 作者单位

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA;

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA;

    Neutron Scattering Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA;

    Department of Chemistry Louisiana State University Baton Rouge Louisiana 70803 USA;

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA;

    Department of Chemistry Louisiana State University Baton Rouge Louisiana 70803 USA;

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA;

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