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

doi:10.1016/j.jmmm.2006.10.295

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

金属材料研究所 (研究所レベル所属のみ)

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 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 π-electrons is m^* ≃ 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.

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
巻	310
号	2 SUPPL. PART 2
DOI	https://doi.org/10.1016/j.jmmm.2006.10.295
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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10.1016/j.jmmm.2006.10.295

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引用スタイル

Shubnikov-de Haas oscillations and field-induced anomaly in an organic conductor β^″-(EDO-TTFVO)₂FeCl₄. / Teramura, M.; Yasuzuka, S.; Yoshino, H.; Yokogawa, K.; Sasaki, T.; Fujiwara, H.; Sugimoto, T.; Hiraoka, T.; Hayashi, T.; Murata, Keizo.

In: Journal of Magnetism and Magnetic Materials, Vol. 310, No. 2 SUPPL. PART 2, 03.2007, p. 1093-1095.

研究成果: Article › 査読

Teramura, M, Yasuzuka, S, Yoshino, H, Yokogawa, K, Sasaki, T, Fujiwara, H, Sugimoto, T, Hiraoka, T, Hayashi, T & Murata, K 2007, 'Shubnikov-de Haas oscillations and field-induced anomaly in an organic conductor β^″-(EDO-TTFVO)₂FeCl₄', Journal of Magnetism and Magnetic Materials, vol. 310, no. 2 SUPPL. PART 2, pp. 1093-1095. https://doi.org/10.1016/j.jmmm.2006.10.295

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

abstract = "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.",

keywords = "Antiferromagnetic, Cyclotron mass, Metal, Organic conductors, π - d Interaction",

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

note = "Funding Information: This work was partly supported by a Grant-in-Aid for Scientific Research on Priority Areas of Molecular Conductors (no. 15073220) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

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T1 - Shubnikov-de Haas oscillations and field-induced anomaly in an organic conductor β″-(EDO-TTFVO)2FeCl4

AU - Teramura, M.

AU - Yasuzuka, S.

AU - Yoshino, H.

AU - Yokogawa, K.

AU - Sasaki, T.

AU - Fujiwara, H.

AU - Sugimoto, T.

AU - Hiraoka, T.

AU - Hayashi, T.

AU - Murata, Keizo

N1 - Funding Information: This work was partly supported by a Grant-in-Aid for Scientific Research on Priority Areas of Molecular Conductors (no. 15073220) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2007/3

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N2 - 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.

AB - 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.

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KW - Cyclotron mass

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KW - π - d Interaction

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