Evolution of superconducting order in Pr(Os${}_{1-x}$Ru${}_x$)${}_4$Sb${}_{12}$

Elbert E. M. Chia, M. B. Salamon, D. Vandervelde +3

We report measurements of the magnetic penetration depth $\lambda$ in single crystals of Pr(Os${}_{1-x}$Ru${}_x$)${}_4$Sb${}_{12}$ down to 0.1 K. Both $\lambda$ and superfluid density ${\rho }_s$ exhi…