The recently discovered layered kagome superconductors AV₃Sb₅ (A = K, Rb, Cs) have garnered significant attention, as they exhibit an intriguing combination of superconductivity, charge density wave (CDW) order, and nontrivial band topology. As such, these kagome systems serve as an exceptional quantum platform for investigating the intricate interplay between electron correlation effects, geometric frustration, and topological electronic structure. A comprehensive understanding of the underlying electronic structure is crucial for unveiling the nature and origin of the CDW order, as well as determining the electron pairing symmetry in the kagome superconductors. In this review, we present a concise survey of the electronic properties of AV₃Sb₅, with a particular focus on the insights derived from angle-resolved photoemission spectroscopy (ARPES). Through the lens of ARPES, we shed light on the electronic characteristics of the kagome superconductors AV₃Sb₅, which will pave the way for exciting new research frontiers in kagome-related physics.

最近发现的层状 Kagome 超导体A V ₃ Sb ₅ ( A  = K, Rb, Cs) 引起了人们的广泛关注，因为它们表现出超导性、电荷密度波 (CDW) 阶数和非平凡能带拓扑的有趣组合。因此，这些 kagome 系统可以作为一个特殊的量子平台来研究电子相关效应、几何挫败和拓扑电子结构之间复杂的相互作用。全面了解基础电子结构对于揭示 CDW 序的性质和起源以及确定 kagome 超导体中的电子配对对称性至关重要。在这篇综述中，我们对A V ₃ Sb ₅的电子特性进行了简明的调查，特别关注从角分辨光电子能谱 (ARPES) 获得的见解。通过ARPES的镜头，我们揭示了kagome超导体A V ₃ Sb ₅的电子特性，这将为kagome相关物理学的激动人心的新研究前沿铺平道路。