Quantum criticality and nodal superconductivity in the FeAs-based superconductor KFe2As2

J. K. Dong, S. Y. Zhou, T. Y. Guan +7

The in-plane resistivity $\rho$ and thermal conductivity $\kappa$ of FeAs-based superconductor KFe${}_2$As${}_2$ single crystal were measured down to 50 mK. We observe non-Fermi-liquid behavio…