The recent discovery of the AV₃Sb₅ (A = K, Rb, Cs) kagome superconductors launched a growing field of research investigating the interplay between superconductivity and charge-density wave order in kagome metals. Specifically, the AV₃Sb₅ family of materials naturally exhibits a Fermi level close to the Van Hove singularities associated with the saddle points formed from the prototypical kagome band structure. The charge-density wave and superconducting states that form within the kagome networks of these compounds exhibit a number of anomalous properties reminiscent of theoretical predictions of exotic states in kagome metals tuned close to their Van Hove fillings. In this Review, we discuss the key structural and electronic features of AV₃Sb₅ compounds and survey the status of investigations of their unconventional electronic phase transitions.

最近发现的A V ₃ Sb ₅ ( A  = K, Rb, Cs) kagome 超导体启动了一个不断发展的研究领域，研究 kagome 金属中的超导性和电荷密度波序之间的相互作用。具体地，A V ₃ Sb ₅系列材料自然地表现出接近与由原型kagome带结构形成的鞍点相关的范霍夫奇点的费米能级。这些化合物的 kagome 网络内形成的电荷密度波和超导态表现出许多异常特性，让人想起 kagome 金属中接近其范霍夫填充物的奇异态的理论预测。在这篇综述中，我们讨论了A V ₃ Sb ₅化合物的关键结构和电子特征，并调查了其非常规电子相变的研究现状。