Elemental Dilution Effect on the Elastic Response due to a Quadrupolar Kondo Effect of the Non-Kramers System Y${}_{1-x}$Pr${}_x$Ir${}_2$Zn${}_{20}$

Ruo Hibino, Tatsuya Yanagisawa, Yoshito Mikami +6

We measured the elastic constants $\left(C_{11}-C_{12}\right)/2$ and $C_{44}$ of the non-Kramers system ${\mathrm{Y}}_{0.63}\mathrm{P}{\mathrm{r}}_{0.37}\mathrm{I}{\mathrm{r}}_2\mathrm{Z}{\mathrm{n}}_{20}$ (Pr-37% system) by means of ultrasound…