Heavy Fermion State Based on the Kondo Effect in EuNi
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概要
- 論文の詳細を見る
EuNi<inf>2</inf>P<inf>2</inf>is known as a heavy fermion compound with an electronic specific heat coefficient \gamma=100 mJ/(K<sup>2</sup>\cdotmol). We grew single crystals and studied their electronic and magnetic properties by measuring the electrical resistivity, magnetic susceptibility, high-field magnetization, specific heat, and thermal expansion. The present heavy fermion state is clarified to be based on the Kondo effect as in CeRu<inf>2</inf>Si<inf>2</inf>, revealing an intensive shrinkage of the volume below about 100 K in the temperature dependence of thermal expansion. The temperature dependences of the 4f-electron contribution to the volume thermal expansion (\Delta V/V)_{4f} and the average Eu valence are found to show good scaling in EuNi<inf>2</inf>P<inf>2</inf>.
- 2013-08-15
著者
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NAKAMA Takao
Faculty of Science, University of the Ryukyus
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ONUKI Yoshichika
Faculty of Science, Osaka University
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Hedo Masato
Faculty Of Science University Of The Ryukyus
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Sugiyama Kiyohiro
Graduate School Of Science Osaka University
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Takeuchi Tetsuya
Low Temperature Center Osaka University
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Hagiwara Masayuki
Kyokugen (center For Quantum Science And Technology Under Extreme Conditions) Osaka University
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Hirose Yusuke
Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043
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MORI Akinobu
Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Hiranaka Yuichi
Graduate School of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
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Nakamura Ai
Graduate School of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
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Mitamura Katsuya
Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Nakamura Ai
Graduate School of Science and Engineering, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
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Hiranaka Yuichi
Graduate School of Science and Engineering, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
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Hedo Masato
Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
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