Quadrupolar Kondo Effect in Non-Kramers Doublet System PrInAg_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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We performed ultrasonic measurement on the rare-earth intermetallic compound PrInAg_2 to examine the quadrupolar Kondo effect associated with the non-Kramers Γ_3 doublet ground state. The characteristic softening of the elastic constant (c_<11>-c_<12>)/2 below 10K in PrInAg_2 is attributed to the Curie term in quadrupolar susceptibility for the quadrupole O^2_2=J^2_x-J^2_y of the stable Γ_3 ground state. (c_<11>-c_<12>)/2 turns to a slight increase with the -lnT dependence below 0.1K, which suggests the quenching of the quadrupolar moment in the quadrupolar Kondo state. Under applied magnetic fields of 10T and 15T above 8.7T corresponding to the Kondo temperature T_k of 〜0.86K, the behavior of (c_<11>-c_<12>)/2 is described in terms of quadrupolar susceptibility for the stable 4f^2 state.
- 一般社団法人日本物理学会の論文
- 2006-01-15
著者
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Kitazawa Hideaki
National Institute For Material Science
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SUZUKI Osamu
National Institute for Materials Science
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Goto Terutaka
Graduate School Of Science And Technology Niigata University
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Ueno Takafumi
Graduate School Of Science And Technology Niigata University
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Nemoto Yuichi
Graduate School Of Science And Technology Niigata University
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Suzuki Hiroyuki
National Institute For Material Science
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Kido Giyuu
National Inst. For Materials Sci. (nims)
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Yamaguchi Takashi
Graduate School Of Engineering Dept. Of Metallurgy University Of Tokyo
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