Magnetic Properties of X-ray Irradiated Organic Mott Insulator $\kappa$-(BEDT-TTF)2Cu[N(CN)2]Cl
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概要
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We have performed static magnetic susceptibility and ESR measurements on the X-ray-irradiated organic Mott insulator $\kappa$-(BEDT-TTF)2Cu[N(CN)2]Cl. The Néel temperature and the spin-flop transition field decrease with increasing irradiation dose. In the ESR signal at 4 K, a paramagnetic component (${\sim}15$%) from itinerant carriers appears after irradiation in addition to the parent antiferromagnetic (${\sim}85$%) and minor paramagnetic localized spin components. We propose that domains of the itinerant carriers with a size on the ten nanometer scale are induced around the molecular defects randomly introduced by X-ray irradiation.
- Physical Society of Japanの論文
- 2010-06-15
著者
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FURUKAWA Ko
Institute for Molecular Science
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Nakamura Toshikazu
Institute For Molecular Science
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Yoneyama Naoki
Institute For Materials Research Tohoku University
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Norio Kobayashi
Institute For Materials Research Tohoku University
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Naoki Yoneyama
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
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Takahiko Sasaki
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
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Toshikazu Nakamura
Institute for Molecular Science, Okazaki, Aichi 444-8585, Japan
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Ko Furukawa
Institute for Molecular Science, Okazaki, Aichi 444-8585, Japan
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