Evidence for the Single-Site Quadrupolar Kondo Effect in the Dilute Non-Kramers System Y_1−xPr_xIr₂Zn₂₀

YANAGISAWA Tatsuya HIDAKA Hiroyuki AMITSUKA Hiroshi

Department of Physics

Aug. 08, 2019

Press release (in Japanese)

Abstract
Acoustic signatures of the single-site quadrupolar Kondo effect in $Y_{0.966}{\mathrm{Pr}}_{0.034}{\mathrm{Ir}}_2{\mathrm{Zn}}_{20}$ are presented. The elastic constant $(C_{11}-C_{12})/2$, corresponding to the ${\Gamma }_3\left(E\right)$-symmetry electric-quadrupolar response, reveals a logarithmic temperature dependence of the quadrupolar susceptibility in the low-magnetic-field region below $\sim 0.3K$. Furthermore, the Curie-type divergence of the elastic constant down to $\sim 1K$ indicates that…..

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Article information:
T. Yanagisawa, H. Hidaka, H. Amitsuka, S. Zherlitsyn, J. Wosnitza, Y. Yamane, and T. Onimaru,
Evidence for the Single-Site Quadrupolar Kondo Effect in the Dilute Non-Kramers System Y_1-xPr_xIr₂Zn₂₀.
Phys. Rev. Lett. 123 (2019) 067201.
DOI: 10.1103/PhysRevLett.123.067201