Anisotropic Superconducting Properties of Kagome Metal CsV₃Sb₅

We systematically measure the superconducting (SC) and mixed state properties of high-quality CsV3Sb5 single crystals with Tc ~ 3.5 K. find that upper critical field Hc2(T) exhibits a large anisotropic ratio Hc2^(ab)/Hc2^(c) 9 at zero temperature fitting its dependence requires minimum two-band effective model. Moreover, lower field, Hc1^(ab)/Hc1^(c), is also found to be larger than 1, which indicates in-plane energy dispersion strongly renormalized near Fermi energy. Both Hc1(T) SC diamagnetic signal are change little initially below K then increase abruptly upon cooling characteristic ~2.8 Furthermore, we identify two-fold anisotropy angular-dependent magnetoresistance in state. Interestingly, that, same T 2.8 K, orientation this displays peculiar twist by an angle 60o Kagome geometry. Our results suggest intriguing emerging complex environment lattice, which, least, partially driven electron-electron correlation.