Shubnikov-de Haas oscillations and field-induced anomaly in an organic conductor β-(EDO-TTFVO)2FeCl4

M. Teramura, S. Yasuzuka, H. Yoshino, K. Yokogawa, T. Sasaki, H. Fujiwara, T. Sugimoto, T. Hiraoka, T. Hayashi, Keizo Murata

研究成果: Article査読

2 被引用数 (Scopus)

抄録

In order to investigate its electronic structure and the π - d interaction, we studied magnetoresistance (MR) of β-(EDO-TTFVO)2FeCl4. In the course of experiment Shubnikov-de Haas (SdH) effect was found, which shows that this material is a 2D metal. Below 3.5 K (close to TN), MR shows a dip anomaly near 8 T. The anomaly becomes more prominent and shifts slightly to higher field with lowering temperature. The dip anomaly may be caused by the transition from the antiferromagnetic to the paramagnetic states. In addition, SdH oscillations are clearly seen at 0.5 K, whose cross-sectional area corresponds to 13% of the first Brillouin zone. The mass of the π-electrons is m* ≃ 3.3 me, which seems heavy as compared with non-magnetic organic conductors with similar cross-sectional areas, suggesting the enhancement of the mass due to magnetic interaction with the Fe 3d spins.

本文言語English
ページ(範囲)1093-1095
ページ数3
ジャーナルJournal of Magnetism and Magnetic Materials
310
2 SUPPL. PART 2
DOI
出版ステータスPublished - 2007 3

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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