Tomonaga-Luttinger Liquid-Fermi Liquid Transition in Chain of PrBa2Cu4O8

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  • Sugai Shunji
    Department of Physics, Faculty of Science, Nagoya University Venture Business Laboratory, Nagoya University
  • Kaji Nobuyuki
    Department of Physics, Faculty of Science, Nagoya University
  • Osuka Akihito
    Department of Physics, Faculty of Science, Nagoya University
  • Takenaka Koshi
    Department of Physics, Faculty of Science, Nagoya University
  • Horii Shigeru
    Department of Applied Chemistry, University of Tokyo
  • Ikuta Hiroshi
    Department of Crystalline Materials Science, Nagoya University

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  • Tomonaga–Luttinger Liquid–Fermi Liquid Transition in Chain of PrBa<sub>2</sub>Cu<sub>4</sub>O<sub>8</sub>

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Optical reflection spectroscopy perpendicular to the double-chain of PrBa2Cu4O8 clarified that carriers in the plane transfer to the chain almost completely as temperature decreases from 295 to 150 K. Many anomalies around 150 K can be explained by the transfer of carriers. The temperature and Zn substitution effects suggest that the chains are in the Fermi liquid state when the carrier density is close to 0.5/Cu(1) and in the Tomonaga–Luttinger liquid state when the carrier density is 0.4/Cu(1).

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