论文标题
LNSBTE（LN = HO和TB）的竞争磁相
Competing magnetic phases in LnSbTe (Ln = Ho and Tb)
论文作者
论文摘要
拓扑电子结构和磁性之间的相互作用可能导致复杂的物理学。在这项工作中，我们描述了一个相当奇特的共存或竞争的情况下，低于LNSBTE（LN = HO和TB）拓扑半学，ZRSIS/PBFCL结构类型的磁性成员（太空组P4/NMM）的磁性成员。中子衍射实验揭示了TN = 3.8 K（Ln = HO）和Tn = 6.4 K（LN = TB）的复杂多步骤阶。可以使用四个传播向量来描述磁相：K1 =（1/2 0 0）和K2 =（1/2 0 1/4）在1.7 K的基本温度下，在两种化合物中的高度温度下，它们转化为不均衡的矢量K1'=（1/2 -D 0 0），K3 =（1/2- d 0 1/2）。与磁性结构的精制模型一起，我们介绍了所提出溶液的磁对称性的组理论分析。这些结果促使进一步研究了这些半法的电子结构与确定的抗磁磁有序之间存在的关系。
The interplay between topological electronic structure and magnetism may result in intricate physics. In this work, we describe a case of rather peculiar coexistence or competition of several magnetic phases below a seemingly single antiferromagnetic transition in LnSbTe (Ln = Ho and Tb) topological semimetals, the magnetic members of the ZrSiS/PbFCl structure type (space group P4/nmm). Neutron diffraction experiments reveal a complex multi-step order below TN = 3.8 K (Ln = Ho) and TN = 6.4 K (Ln = Tb). Magnetic phases can be described using four propagation vectors: k1 = (1/2 0 0) and k2 = (1/2 0 1/4) at the base temperature of 1.7 K, which transform into incommensurate vectors k1' = (1/2 - d 0 0), k3 = (1/2 - d 0 1/2) at elevated temperatures in both compounds. Together with the refined models of magnetic structures, we present the group-theoretical analysis of the magnetic symmetry of the proposed solutions. These results prompt further investigations of the relation between the electronic structure of those semimetals and the determined antiferromagnetic ordering existing therein.
