Comment on "Quantum Criticality and Nodal Superconductivity in the FeAs-Based Superconductor KFe${}_2$As${}_2$"

Taichi Terashima, Motoi Kimata, Nobuyuki Kurita +15

In a recent Letter [J. K. Dong et al., Phys. Rev. Lett. 104, 087005 (2010)], Dong \textit{et al}. have observed a $T^{1.5}$ dependence of resistivity $\rho$ in KFe${}_2$As${}_2$ at the up…