Possibility of triplet pairing in palladium

The spin-fluctuation contribution to the $p$-state pairing interaction in Pd is calculated. The resulting transition temperature, due to spin fluctuations alone, is only of order ${10}^{-5\mathrm{}}$ K indicating that the occurrence of an observable $p$-state transition depends strongly on the phonon interaction. Recent calculations of the $p$-wave phonon interaction are briefly discussed but do not yet allow a reliable prediction of $T_c$.