Nodeless Superconductivity in Kagome Metal CsV₃Sb₅ with and without Time Reversal Symmetry Breaking.

ABSTRACT: The kagome metal CsV₃Sb₅ features an unusual competition between the charge-density-wave (CDW) order and superconductivity. Evidence for time reversal symmetry breaking (TRSB) inside the CDW phase has been accumulating. Hence, the superconductivity in CsV₃Sb₅ emerges from a TRSB normal state, potentially resulting in an exotic superconducting state. To reveal the pairing symmetry, we first investigate the effect of nonmagnetic impurity. Our results show that the superconducting critical temperature is insensitive to disorder, pointing to conventional s-wave superconductivity. Moreover, our measurements of the self-field critical current (I_c,sf), which is related to the London penetration depth, also confirm

SUBMITTER: Zhang W 

PROVIDER: S-EPMC9912374 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature