Evidence for the Single-Site Quadrupolar Kondo Effect in the Dilute non-Kramers System Y${}_{1-x}$Pr${}_x$Ir${}_2$Zn${}_{20}$

T. Yanagisawa, H. Hidaka, H. Amitsuka +4

Acoustic signatures of the single-site quadrupolar Kondo effect in Y${}_{0.966}$Pr${}_{0.034}$Ir${}_2$Zn${}_{20}$ are presented. The elastic constant ($C_{11}-C_{12}$)/2, corresponding to…