Electrically controlled superconductor-to-failed insulator transition and giant anomalous Hall effect in kagome metal CsV₃Sb₅ nanoflakes.

ABSTRACT: The electronic correlations (e.g. unconventional superconductivity (SC), chiral charge order and nematic order) and giant anomalous Hall effect (AHE) in topological kagome metals AV₃Sb₅ (A = K, Rb, and Cs) have attracted great interest. Electrical control of those correlated electronic states and AHE allows us to resolve their own nature and origin and to discover new quantum phenomena. Here, we show that electrically controlled proton intercalation has significant impacts on striking quantum phenomena in CsV₃Sb₅ nanodevices mainly through inducing disorders in thinner nanoflakes and carrier density modulation in thicker ones. Specifically, in disordered thin nanoflakes (below 25 nm), we achieve a quantum phase transition from a superconductor to

SUBMITTER: Zheng G 

PROVIDER: S-EPMC9908868 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature