$p$-Wave Superconductivity in U${\mathrm{Be}}_{13}$

The specific heat in the superconducting state of U${\mathrm{Be}}_{13}$ shows marked deviations from BCS theory and obeys a $T^3$ rather than an exponential law at low temperatures. A good description is obtained by the assumption of an Anderson-Brinkman-Morel $p$-wave superconducting state at all temperatures. The value of the spin-fluctuation parameter deduced is large and consistent with the stability of such a state.