Angle-resolved photoemission study of Sr2CuO3

H. Fujisawa, T. Yokoya, T. Takahashi, S. Miyasaka, M. Kibune, H. Takagi

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We report angle-resolved photoemission spectroscopy (ARPES) on a single Cu-O chain compound Sr2CuO3 with Ne I photons. In contrast with previous ARPES with higher-energy photons, the present result clearly shows two well-separated branches of dispersions near EF ascribable to spinon and holon excitations, respectively. This indicates that spin and charge degrees of freedom are separated in one-dimensional Cu-O chains, supporting the theoretical prediction as well as the previous ARPES interpretation. Comparison with previous ARPES results indicates that surface, photoionization cross section, and finite-temperature effects substantially modify ARPES spectra.

Original languageEnglish
Pages (from-to)7358-7361
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number11
Publication statusPublished - 1999 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Fujisawa, H., Yokoya, T., Takahashi, T., Miyasaka, S., Kibune, M., & Takagi, H. (1999). Angle-resolved photoemission study of Sr2CuO3. Physical Review B - Condensed Matter and Materials Physics, 59(11), 7358-7361.