Angle-resolved photoemission study of Zn-doped PrBa2Cu4O8: Possible observation of single-particle spectral function for a Tomonaga-Luttinger liquid

T. Mizokawa, K. Nakada, C. Kim, C. Kim, Z. X. Shen, Z. X. Shen, T. Yoshida, A. Fujimori, A. Fujimori, S. Horii, Yuh Yamada, H. Ikuta, U. Mizutani

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19 Citations (Scopus)


We have studied the electronic structure of metallic Cu-O double chains in Zn-doped PrBa2Cu4O8 (Pr124) using angle-resolved photoemission spectroscopy. The single-particle spectral function of Zn-doped Pr124 is compatible with a power-law spectral function expected for a Tomonaga-Luttinger liquid. This is in contrast to the fact that the photoemission spectrum of pure Pr124 shows a Fermi step and can be interpreted as a Fermi liquid realized in coupled metallic chains. The exponent α is estimated to be 0.6±0,1 that is one of the smallest values among those obtained for various one-dimensional metals.

Original languageEnglish
Article number193101
Pages (from-to)1931011-1931014
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number19
Publication statusPublished - 2002 May 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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