论文标题
Kagome Ferromagnet Cocu3（OH）6Cl2中拓扑电子和镁的一致
Concurrence of topological electrons and magnons in the Kagome ferromagnet CoCu3(OH)6Cl2
论文作者
论文摘要
自旋和电荷是电子的两个相互关联的特性。然而，以前关于拓扑问题的大多数作品分别研究了电子和宏伟的激发。在本文中，通过将密度功能理论与Schwinger Boson方法相结合，我们同时确定拓扑电子带结构和拓扑元音光谱在狭窄的频段 - GAP COCU3（OH）6Cl2的铁磁基态下，这是一种堆叠kagome lattice Lattice lattical材料，带有fractice lattical材料，并带有fractional octancy on cu sery cu seres cu cu serances in Cu seriss cu serancy cu。该材料为研究不同类型的拓扑激发的相互作用提供了理想的平台。我们的工作还提出了一种有用的方法来处理具有狭窄带隙的相关拓扑磁系统。
Spin and charge are two interrelated properties of electrons. However, most of previous works on topological matter study the electronic and magnonic excitations separately. In this paper, by combining density functional theory calculations with the Schwinger boson method, we determine the topological electronic band structures and topological magnon spectrum simultaneously in the ferromagnetic ground state of the narrow-band-gap CoCu3(OH)6Cl2, which is an ABC stacking Kagome lattice material with fractional occupancy on Cu sites. This material provides an ideal platform to study the interplay of different types of topological excitations. Our work also proposes a useful method to deal with correlated topological magnetic systems with narrow band gaps.
