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Heavy fermion state in YbIr$$_2$$Zn$$_{20}$$

YbIr$$_2$$Zn$$_{20}$$の重い電子状態

吉内 伸吾*; 戸田 雅敏*; 松下 昌輝*; 安井 慎一*; 広瀬 雄介*; 大家 政洋*; 片山 敬亮*; 本多 史憲*; 杉山 清寛*; 萩原 政幸*; 金道 浩一*; 竹内 徹也*; 山本 悦嗣  ; 芳賀 芳範   ; 摂待 力生*; 田中 斗志貴*; 久保 康則*; 大貫 惇睦

Yoshiuchi, Shingo*; Toda, Masatoshi*; Matsushita, Masaki*; Yasui, Shinichi*; Hirose, Yusuke*; Oya, Masahiro*; Katayama, Keisuke*; Honda, Fuminori*; Sugiyama, Kiyohiro*; Hagiwara, Masayuki*; Kindo, Koichi*; Takeuchi, Tetsuya*; Yamamoto, Etsuji; Haga, Yoshinori; Settai, Rikio*; Tanaka, Toshiki*; Kubo, Yasunori*; Onuki, Yoshichika

High-field magnetization and de Haas-van Alphen effect were measured on a heavy fermion compound YbIr$$_2$$Zn$$_{20}$$. Large cyclotron masses ranging from 4 to 27 $$m_0$$ were detected in the dHvA experiment, and are found to be reduced at magnetic fields higher than 120 kOe. From the present experimental results together with the 4f-itinerant band calculations, the 4f electrons are considered to form heavy fermion state.

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パーセンタイル:82.77

分野:Physics, Multidisciplinary

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