Heavy fermion state in YbIrZn $_{20}$

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 YbIrZn $_{20}$ . Large cyclotron masses ranging from 4 to 27 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.

Language	:	English
Journal	:	Journal of the Physical Society of Japan
Volume	:	78
Number	:	12
Pages	:	p.123711_1 - 123711_4
Publication Year/Month	:	2009/12
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Paper URL	:	https://doi.org/10.1143/JPSJ.78.123711
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	第4研究棟
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	大阪大学

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Registration No. : AA20090828
JAEA Abstracts No. : 38000529
Paper Submission No. : 7091

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