Direct observation of anisotropic Cooper pairing in kagome
superconductor CsV3Sb5
Direct observation of anisotropic Cooper pairing in kagome
superconductor CsV3Sb5
In the recently discovered kagome superconductor AV3Sb5 (A = K, Rb, and Cs), the superconductivity is intertwined with an unconventional charge density wave order. Its pairing symmetry remains elusive owing to the lack of direct measurement of the superconducting gap in the momentum space. In this letter, utilizing laser-based ultra-high-resolution …