Divergent thermal expansion and Grüneisen ratio in a quadrupolar Kondo metal

We report on the low-temperature thermal expansion and magnetostriction of the single-impurity quadrupolar Kondo candidate Y_{1−x}Pr_{x}Ir_{2}Zn_{20}. In the dilute limit, we find a quadrupolar strain that possesses a singular dependence on temperature T, ɛ_{u}∼H^{2}log(1/T), for a small but finite...

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Bibliographic Details
Main Authors: A. Wörl, M. Garst, Y. Yamane, S. Bachus, T. Onimaru, P. Gegenwart
Format: Article
Language:English
Published: American Physical Society 2022-06-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.4.L022053