Superconductivity and nematic order in a new titanium-based kagome metal CsTi₃Bi₅ without charge density wave order.

ABSTRACT: The cascade of correlated topological quantum states in the newly discovered vanadium-based kagome superconductors, AV₃Sb₅ (A = K, Rb, and Cs), with a Z₂ topological band structure has sparked immense interest. Here, we report the discovery of superconductivity and electronic nematic order in high-quality single-crystals of a new titanium-based kagome metal, CsTi₃Bi₅, that preserves the translation symmetry, in stark contrast to the charge density wave superconductor AV₃Sb₅. Transport and magnetic susceptibility measurements show superconductivity with an onset superconducting transition temperature T_c of approximately 4.8 K. Using the scanning tunneling microscopy/spectroscopy and Josephson scanning tu

SUBMITTER: Yang H 

PROVIDER: S-EPMC11543671 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature