Chiral singlet superconductivity in the weakly correlated metal LaPt₃P.

ABSTRACT: Chiral superconductors are novel topological materials with finite angular momentum Cooper pairs circulating around a unique chiral axis, thereby spontaneously breaking time-reversal symmetry. They are rather scarce and usually feature triplet pairing: a canonical example is the chiral p-wave state realized in the A-phase of superfluid He³. Chiral triplet superconductors are, however, topologically fragile with the corresponding gapless boundary modes only weakly protected against symmetry-preserving perturbations in contrast to their singlet counterparts. Using muon spin relaxation measurements, here we report that the weakly correlated pnictide compound LaPt₃P has the two key features of a chiral superconductor: spontaneous magnetic fields inside the superconducting

SUBMITTER: Biswas PK 

PROVIDER: S-EPMC8097077 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature