题目：Realization of Kagome Kondo Lattice

报告人：应天平 特聘研究员 中国科学院物理研究所

报告时间：2025年10月23日（周四）上午9:30

报告地点：超硬实验综合楼5楼A514会议室

摘要：The Kagome lattice, with its symmetry-protected flat bands, Dirac points, and van Hove singularities, has recently become a prominent focus in condensed matter physics, revealing a wide array of phenomena, including magnetism, non-trivial topology, charge-density waves, and superconductivity. To date, all reported Kagome materials reside in the weak or non-correlated regime, as their flat bands either lie far from the Fermi level or are disrupted by structural distortions.

In this talk, I will report the first realization of Kondo lattice physics in a new kind of van der Waals-like Kagome material CsCr₆Sb₆, which features rare isolated Fermi-level flat bands, accompanied by a series of strongly-correlated phenomena: (1) Heavy fermion behavior with ultra-low carrier density; (2) Anomalous dimensionality-induced magnetism; (3) Kondo breakdown, strange metal, and bad metal behavior. The talk will conclude with recent, unpublished discoveries that further illuminate this unique correlated system.

报告人简介：应天平，中国科学院物理研究所，特聘研究员，博士生导师。长期从事新功能晶体和新超导体的发现、物态调控及高温超导材料的实用化研究。以第一/通讯作者发表Nat. Chem., Phys. Rev. Lett. (2), J. Am. Chem. Soc. (8), Sci. Adv.、Nat. Commun. (2), Sci. Bull. (2), Adv. Mater.(4), Angew. Chem. Int. Ed.等。