Nodal Superconductivity with Multiple Gaps in SmFeAsO${}_{0.9}$F${}_{0.1}$

Yonglei Wang, Lei Shan, Lei Fang +3

We report the observation of two gaps in the superconductor SmFeAsO${}_{0.9}$F${}_{0.1}$ (F-SmFeAsO) with $T_c=51.5K$ as measured by point-contact spectroscopy. Both gaps decrease with…