Broken Time Reversal Symmetry in Superconducting Pr1-xCexPt4Ge12

Jian Zhang, D. E. MacLaughlin, A. D. Hillier +4

We report results of zero-field muon spin relaxation experiments on the filled-skutterudite superconductors~Pr${}_{1-x}$Ce${}_x$Pt${}_4$Ge${}_{12}$, $x=0$, 0.07, 0.1, and 0.2, to inves…