Abstract
Recently, it was reported by MacLaughlin et al. in Phys. Rev. B 93, 214421 (2016) that exhibits an anomalous temperature dependence in the relaxation rate of , and stressed that such temperature dependence cannot be understood by the scenario based on the quantum critical valence transition (QCVT) while this compound exhibits a series of the non-Fermi-liquid behaviors explained by the theory of the QCVT. In this paper, we point out that the anomalous temperature dependence in can be understood semiquantitatively by assuming that the attraction of a screening cloud of conduction electrons about the induces a local magnetic moment arising from a hole on the Yb ion, giving rise to the Kondo effect between heavy quasiparticles.
- Received 11 June 2017
- Revised 25 July 2018
DOI:https://doi.org/10.1103/PhysRevB.98.075125
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