Materials with a Kagome lattice, composed of corner-sharing triangles, have garnered significant interest due to their potential to host strong electronic correlations, exotic magnetism, and nontrivial topology. The AV₃Sb₅ family (A = K, Cs, Rb) has become a focal point of research because of its diverse physical properties, which include cascade charge orders, superconductivity, and topological states, as well as the complex interplay between these phenomena. In this presentation, I will introduce the key physical properties of Kagome materials and discuss our research on the superconductivity of KV₃Sb₅. We have investigated the proximity-induced superconductivity in the intrinsically non-superconducting K₁₋ₓV₃Sb₅ using Josephson junctions. An anisotropic interference pattern was observed under both in-plane and out-of-plane magnetic fields, suggesting the presence of an anisotropic internal magnetic field in K₁₋ₓV₃Sb₅, which affects the superconducting coupling in the junction. Furthermore, the long-lived fast oscillations we observed point to localized conducting channels originating from edge states. Our recent work has focused on KV₃Sb₅ with intrinsic superconductivity. We have observed supercurrent oscillations within KV₃Sb₅ itself, demonstrating inherent supercurrent interference. Additionally, we discovered the propagation of supercurrent oscillations between a superconductor and a superconducting ring along the applied current trajectory, suggesting the presence of a global critical current effect.

Yaojia Wang is currently an assistant professor at KU Leuven in Belgium. She got the Bachler degree in Physics at Zhengzhou University in 2013 and completed her PhD degree in Condensed matter Physics at Nanjing University in 2019. Following this, she worked as a postdoc at Max Planck Institute of Microstructure Physics. During 2021-2025, she was a postdoctoral researcher at Delft University of Technology in Netherlands and was funded by Dutch NWO-Veni talent program to conduct her independent research. She is a guest editor of Communication Physics, and has been a reviewer of journals such as Nature, Nature Communications, Science Advances.