Single-Site Non-Fermi-Liquid Behaviors in a Diluted 4f2 System Y1xPrxIr2Zn20

Y. Yamane, T. Onimaru, K. Wakiya, K. T. Matsumoto, K. Umeo, and T. Takabatake
Phys. Rev. Lett. 121, 077206 – Published 17 August 2018
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Abstract

Electrical resistivity ρ(T) and specific heat C(T) measurements have been made on the diluted 4f2 system Y(Pr)Ir2Zn20. Both data of ρ and magnetic specific heat Cm per Pr ion are well scaled as a function of T/T0, where T0 is a characteristic temperature of non-Fermi-liquid (NFL) behaviors. Furthermore, the temperature dependences of ρ and Cm/T agree with the NFL behaviors predicted by the two-channel Kondo model for the strong coupling limit. Therefore, we infer that the observed NFL behaviors result from the single-site quadrupole Kondo effect due to the hybridization of the 4f2 states with multichannel conduction electrons.

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  • Received 5 February 2018
  • Revised 3 May 2018

DOI:https://doi.org/10.1103/PhysRevLett.121.077206

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Y. Yamane1, T. Onimaru1,*, K. Wakiya1,†, K. T. Matsumoto1,‡, K. Umeo2, and T. Takabatake1

  • 1Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
  • 2Cryogenic and Instrumental Analysis Division, N-BARD, Hiroshima University, Higashi-Hiroshima 739-8526, Japan

  • *onimaru@hiroshima-u.ac.jp
  • Present address: Facility of Engineering, Yokohama National University, Yokohama 240-8501, Japan.
  • Present address: Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan.

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Vol. 121, Iss. 7 — 17 August 2018

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