Heavy fermion state based on the kondo effect in EuNi2P 2

Yuichi Hiranaka, Ai Nakamura, Masato Hedo, Tetsuya Takeuchi, Akinobu Mori, Yusuke Hirose, Katsuya Mitamura, Kiyohiro Sugiyama, Masayuki Hagiwara, Takao Nakama, Yoshichika Onuki

研究成果: Article査読

66 被引用数 (Scopus)

抄録

EuNi2P2 is known as a heavy fermion compound with an electronic specific heat coefficient γ = 100 mJ/(K2·mol) . 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 CeRu2Si2, revealing an intensive shrinkage of the volume below about 100K in the temperature dependence of thermal expansion. The temperature dependences of the 4f -electron contribution to the volume thermal expansion ΔV/V) 4f and the average Eu valence are found to show good scaling in EuNi2P2.

本文言語English
論文番号083708
ジャーナルjournal of the physical society of japan
82
8
DOI
出版ステータスPublished - 2013 8月
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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