Multigap Superconductivity in Y<sub>2</sub>C<sub>3</sub>: A <sup>13</sup>C-NMR Study
Multigap Superconductivity in Y<sub>2</sub>C<sub>3</sub>: A <sup>13</sup>C-NMR Study
We report on the superconducting properties of Y 2 C 3 with a relatively high transition temperature T c = 15.7 K investigated by 13 C nuclear-magnetic-resonance (NMR) measurements under a magnetic field. The 13 C Knight shift has revealed a significant decrease below T c , suggesting a spin-singlet …