Unusual competition of superconductivity and charge-density-wave state in a compressed topological kagome metal.

ABSTRACT: Understanding the competition between superconductivity and other ordered states (such as antiferromagnetic or charge-density-wave (CDW) state) is a central issue in condensed matter physics. The recently discovered layered kagome metal AV₃Sb₅ (A = K, Rb, and Cs) provides us a new playground to study the interplay of superconductivity and CDW state by involving nontrivial topology of band structures. Here, we conduct high-pressure electrical transport and magnetic susceptibility measurements to study CsV₃Sb₅ with the highest T_c of 2.7 K in AV₃Sb₅ family. While the CDW transition is monotonically suppressed by pressure, superconductivity is enhanced with increasing pressure up to P1 ≈ 0.7 GPa, then an unexpected su

SUBMITTER: Yu FH 

PROVIDER: S-EPMC8192749 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature