13C NMR Study on Zero-Gap State in the Organic Conductor $\theta$-(BEDT-TTF)2I3 under Pressure
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概要
- 論文の詳細を見る
We present the results of our 13C NMR study of the quasi-two-dimensional organic conductor $\theta$-(BEDT-TTF)2I3 under pressure, which is suggested to be a zero-gap conductor by transport measurements. We found that NMR spin shift is proportional to $T$ and that spin–lattice relaxation rate follows the power law $T^{\alpha}$ ($\alpha=3--4$), where $T$ is the temperature. This behavior is consistent with the cone-like band dispersion and provides microscopic evidence for the realization of the zero-gap state in the present material under pressure.
- Physical Society of Japanの論文
- 2010-06-15
著者
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Tamura Masafumi
Department Of Chemistry Faculty Of Science The University Of Tokyo
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Miyagawa Kazuya
Department Of Applied Mathematics Faculty Of Engineering Science Osaka University
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Kazushi Kanoda
Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
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Hirayama Motoaki
Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
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Masafumi Tamura
Department of Physics, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
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Motoaki Hirayama
Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
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Hirayama Motoaki
Department of Applied Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
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