标题： 拓扑磁性在kagome金属Co3Sn2S2中的原子视角 显示英文标题

标题： Atomic perspective on the topological magnetism in kagome metal Co3Sn2S2

摘要： 具有kagome晶格的拓扑量子材料由于其非常规电子结构而引起了广泛关注，这些结构表现出非平凡的拓扑性、异常磁性和电子关联性。其中，Co3Sn2S2突出表现为典型的kagome金属，独特地结合了本征铁磁性与拓扑非平凡的电子态。本文综述了通过扫描隧道显微镜在研究kagome金属Co3Sn2S2方面取得的最新进展。我们首先介绍了不同的表面识别方法，并建议使用设计层选择性化学标记进行确定性的表面识别。然后讨论了贝里曲率引起的平带轨道磁性及其相关的非常规泽曼效应。此外，我们探讨了来自Weyl拓扑的边界态，并分析了通过准粒子干涉图案检测费米弧以及揭示边缘态拓扑特性的挑战。最后，我们回顾了通过自旋极化隧穿光谱观察到的自旋轨道耦合量子杂质态及其与Weyl拓扑和平带磁性的联系。我们还对当前研究方法的局限性进行了深入分析和建设性评论。这篇综述强调了扫描隧道显微镜在解析原子尺度上拓扑性、磁性和关联性的复杂相互作用中的关键作用，本文讨论的方法可以应用于研究其他拓扑量子材料。 显示英文摘要

摘要： Topological quantum materials with kagome lattices have attracted intense interest due to their unconventional electronic structures, which exhibit nontrivial topology, anomalous magnetism, and electronic correlations. Among these, Co3Sn2S2 stands out as a prototypical kagome metal, uniquely combining intrinsic ferromagnetism with topologically nontrivial electronic states. This perspective presents a systematic overview of recent advances in studying kagome metal Co3Sn2S2 achieved through scanning tunneling microscopy. We begin by introducing different methodologies for surface identification and propose using designer layer-selective chemical markers for conclusive surface identification. We then discuss the Berry curvature induced flat band orbital magnetism and the associated unconventional Zeeman effect. Furthermore, we explore boundary states arising from Weyl topology and analyze challenges in detecting Fermi arcs via quasiparticle interference patterns and in uncovering the topological aspect of the edge states. Finally, we review recent observations of spin-orbit-coupled quantum impurity states through spin-polarized tunneling spectroscopy, as well as their connection to Weyl topology and flat band magnetism. We also provide in-depth analysis and constructive comments on the limitations of the current research approach. This review highlights the critical role of scanning tunneling microscopy in unraveling the intricate interplay between topology, magnetism, and correlations at the atomic scale, and the methodology discussed here can be applied to study other topological quantum materials in general.