Observation of anomalous thermal Hall effect in a Kagome superconductor.

ABSTRACT: Broken time-reversal symmetry (TRS) in superconductors can induce not only spontaneous magnetization by the finite angular momentum of Cooper pairs but also the anomalous thermal Hall effects (ATHEs), whose detection has been extremely challenging. Here, we report the successful observation of an ATHE developing below the superconducting transition temperature at zero magnetic field in the kagome-lattice superconductor CsV₃Sb₅. This finding is verified by the absence of a signal in a conventional type-II superconductor using the same setup and by ruling out the trapped-vortex effects through micro-Hall array measurements. Both the temperature dependence and the magnitude of the observed anomalous thermal Hall conductivity are quite different from those expected for th

SUBMITTER: Yoshida H 

PROVIDER: S-EPMC12494027 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature