论文标题
拓扑量子磁铁XMN6SN6中的稳健kagome电子结构（x = dy，tb，gd，y）
Robust Kagome Electronic Structure in Topological Quantum Magnets XMn6Sn6 (X = Dy, Tb, Gd, Y)
论文作者
论文摘要
晶体几何形状可以极大地影响量子材料的新兴特性。例如，Kagome晶格是研究拓扑，磁性和电子相关性之间丰富相互作用的理想平台。在这项工作中，结合了高分辨率角度分辨光发射光谱和AB-Initio计算，我们系统地研究了XMN6SN6（X = DY，TB，GD，GD，Y）家族化合物的电子结构。我们观察到由Mn原子的磁性kagome晶格产生的Dirac Fermion和平坦带。有趣的是，无论其不同的磁接地态和4F电子构型，平面带均位于同一能量区域。这些观察结果表明，在XMN6SN6家族中具有强大的MN磁性kagome晶格，从而为搜索和调查磁性拓扑材料中新的新兴现象提供了理想的平台。
Crystal geometry can greatly influence the emergent properties of quantum materials. As an example, the kagome lattice is an ideal platform to study the rich interplay between topology, magnetism, and electronic correlation. In this work, combining high-resolution angle-resolved photoemission spectroscopy and ab-initio calculation, we systematically investigate the electronic structure of XMn6Sn6 (X = Dy, Tb, Gd, Y) family compounds. We observe the Dirac fermion and the flat band arising from the magnetic kagome lattice of Mn atoms. Interestingly, the flat band locates in the same energy region in all compounds studied, regardless of their different magnetic ground states and 4f electronic configurations. These observations suggest a robust Mn magnetic kagome lattice across the XMn6Sn6 family, thus providing an ideal platform for the search and investigation on new emergent phenomena in magnetic topological materials.
