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

被引：2

作者：

Teramura, M. ^{[1
]}

Yasuzuka, S.

Yoshino, H.

Yokogawa, K.

Sasaki, T.

Fujiwara, H.

Sugimoto, T.

Hiraoka, T.

Hayashi, T.

Murata, Keizo

机构：

[1] Osaka City Univ, Grad Sch Sci, Dept Mat Sci, Sumiyoshi Ku, Osaka 5588585, Japan

[2] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[3] Osaka Prefecture Univ, Dept Chem, Osaka 5998570, Japan

[4] Japan Sci & Technol Agcy, CREST, Saitama 3320012, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 310卷 / 02期

关键词：

organic conductors; metal; antiferromagnetic; pi-d interaction; cyclotron mass;

D O I：

10.1016/j.jmmm.2006.10.295

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to investigate its electronic structure and the pi-d interaction, we studied magnetoresistance (MR) of beta ''-(EDO-TTFVO)(2)FeCl4. 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 T-N), 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 pi-electrons is m* similar or equal to 3.3 m(e), 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. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1093 / 1095

页数：3