Low-temperature properties in dilute quadrupolar compound Pr xLa1-xInAg2

Tatsuya Kawae, Chenshu Li, Yasuo Yoshida, Kazuyoshi Takeda, Takayuki Asano, Tetsuo Kitai

研究成果: Contribution to journalArticle査読

17 被引用数 (Scopus)

抄録

The low-temperature properties of PrxLa1-xInAg 2 have been studied for a wide concentration range of Pr ions between 0 ≤ x ≤ 0:6. The susceptibility above T = 15K is well reproduced by the crystalelectric-field level scheme with a non-Kramers Γ3 doublet in the ground state for each concentration, while that below T = 15K shows a non-Fermi-liquid behavior with a logarithmic temperature dependence. The temperature dependence of the specific heat C/T shows a monotonic enhancement below T = 10 K, which can be scaled by a characteristic temperature T* defined at each concentration. These results suggest that the anomalous low-temperature properties are understood as the single-ion nature of Γ3 quadrupolar moments. The origin of the anomalous properties is discussed in connection with the quadrupolar Kondo effect arising from the correlation between the Γ3 moments and the conduction electrons.

本文言語英語
ページ(範囲)2332-2337
ページ数6
ジャーナルjournal of the physical society of japan
74
8
DOI
出版ステータス出版済み - 8 2005

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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