| Research Collaborator |
Maple M. Brian カリフォルニア大学サンディエゴ校, 物理学科, 教授
Zherlitsyn Sergei ヘルムホルツ研究所ドレスデン・ローゼンドルフ, ドレスデン強磁場研究所, 強磁場研究施設部部門長
Sechovský Vladimír カレル大学, 数物理学科, 教授
Amitsuka Hiroshi 北海道大学
Green Elizabeth Lauren HZDR
Nakamura Shintaro 東北大学, 金属材料研究所
Awaji Satoru 東北大学, 金属材料研究所
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| Outline of Final Research Achievements |
Cubic cage-structured compound PrNi2Cd20 show no evidence for magnetic order in specific heat ang magnetization and suggest a non-Kramers Γ3-doublet crystalline electric field ground state. In order to investigate the CEF ground state and search for possible exotic phenomena such as quadrupolar order and multi-channel Kondo effect, we have performed ultrasonic measurements on a single crystal of PrNi2Cd20 and its reference materials (SmNi2Cd20, (Y,Pr)Ir2Zn20, RBe13 (R = Lu, Th, U), and UAu2Si2), down to 0.02 K up to 58 T, in collaboration with UC San Diego (USA), Dresden High-Magnetic Field Lab. (Germany), Charles Univ. (Prague), IMR, Tohoku Univ. (Japan) and Hokkaido Univ. (Japan). We found corroborating evidence for quadrupolar Kondo effect, and possible multipolar contributions on the low-temperature magnetic field-induced phase of these compounds.
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