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Anomalous Metallic State in (TTM-TTP)I3 with a Highly One-Dimensional Half-Filled Band under Pressure beyond 7 GPa

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We demonstrate that the title compound (TTM-TTP)I3 with a highly one-dimensional half-filled band, which shows a metal-insulator (MI) transition around TMI=120 K, is metallized by application of extremely high pressure (P > 7 GPa) using the cubic anvil apparatus. Above 5.7 GPa, the metallic behavior is described by ρ ~ Tα with α ~ 0.3 which is much smaller than the expected value of Fermi liquid theory, α=2. Based on these findings, the driving force of the MI transition is discussed.

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Authors and Affiliations

  1. Department of Material Science, Graduate School of Science, Osaka City University, Osaka, 558-8588, Japan

    S. Yasuzuka, Keizo Murata, T. Fujimoto & M. Shimotori

  2. Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Tokyo, 152-8552, Japan

    T. Kawamoto & T. Mori

  3. Insistute for Solid State Physics (ISSP), The University of Tokyo, Chiba, 277-8581, Japan

    M. Hedo & Y. Uwatoko

Authors
  1. S. Yasuzuka
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  2. Keizo Murata
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  3. T. Fujimoto
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  4. M. Shimotori
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  5. T. Kawamoto
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  6. T. Mori
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  7. M. Hedo
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  8. Y. Uwatoko
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Corresponding author

Correspondence to S. Yasuzuka.

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Yasuzuka, S., Murata, K., Fujimoto, T. et al. Anomalous Metallic State in (TTM-TTP)I3 with a Highly One-Dimensional Half-Filled Band under Pressure beyond 7 GPa. J Low Temp Phys 142, 199–202 (2006). https://doi.org/10.1007/s10909-006-9007-0

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  • DOI: https://doi.org/10.1007/s10909-006-9007-0

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