Exploring the two-dome superconductivity of 2D Kagome CsV3Sb5-xSnx superconductor and its relation with charge density wave and time reversal symmetry breaking phases

We propose a muon spin spectroscopy investigation of the two-dome superconducting behaviour of the newly discovered CsV3Sb5 two-dimensional Kagome compound as a function of the doping driven by the Sn/Sb heterovalent partial substitution. Transverse field measurements will be used to investigate the superconducting gap nature and to measure the London penetration depth evolution with doping. Zero field measurements will be performed to study the possible presence of time-reversal symmetry breaking in both the superconducting and the normal state induced by the doping. This study is expected to give significant experimental outcomes to understand the exotic and rich quantum behaviour arising from the 2D Kagome lattice.