Angle-resolved photoemission study of Sr2CuO3

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

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


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


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