Low-temperature properties of the S= 12 spin system Yb3Ru4Al12 with a distorted kagome lattice structure

S. Nakamura, S. Toyoshima, N. Kabeya, K. Katoh, T. Nojima, A. Ochiai

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17 Citations (Scopus)


We have synthesized single crystals of ternary intermetallic Yb3Ru4Al12 with a distorted kagome lattice structure, and investigated the low-temperature resistivity, specific heat, magnetization, and magnetic phase transitions. Yb3Ru4Al12 is the first 4f system that has a Gd3Ru4Al12-type crystal structure where antiferromagnetic interaction acts on the spin. The crystal electric field (CEF) ground state of this compound is determined as a well isolated twofold degenerate state that is subjected to a strong easy-plane-type magnetic anisotropy. In the present study, the spin system of Yb3Ru4Al12 is regarded as an AFM XY model of S=1/2. This compound undergoes successive magnetic phase transitions at 1.5 and 1.6 K, and the resistivity exhibits T2 behavior below 1 K. The ratio of the coefficient of the T2 term in the resistivity A, and that of the electronic specific heat coefficient γ0, deviates from the Kadowaki-Woods (KW) law. The successive phase transitions and low-temperature properties of Yb3Ru4Al12 where geometrical frustration and heavy fermion behavior occur are discussed.

Original languageEnglish
Article number214426
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number21
Publication statusPublished - 2015 Jun 22

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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