Inhomogeneous level splitting in Pr${}_{2-x}$Bi${}_x$Ru${}_2$O${}_7$

J. van Duijn, K. H. Kim, N. Hur +7

We report that Bi doping drives Pr${}_x$Bi${}_{2-x}$Ru${}_2$O${}_7$ from an antiferromagnetic insulator ($x=2$) to a metallic paramagnet ($x\approx 1$) with a broad low $T$ maximum in $C/T…