A Strongly Anisotropic Superconducting Gap in the Kagome Superconductor CsV${}_3$Sb${}_5$: A Study of Directional Point-Contact Andreev Reflection Spectroscopy

Yu-qing Zhao, Zhi-fan Wu, Hai-yan Zuo +11

In the recently discovered V-based kagome superconductors AV${}_3$Sb${}_5$ (A = K, Rb, and Cs), superconductivity is intertwined with an unconventional charge density wave (CDW) order,…