Angle-Resolved Photoemission Study of the [Formula presented]-Chain Compound [Formula presented]: Spin-Charge Separation in Hybridized [Formula presented] Chains

Shin ichi Fujimori, Akihiro Ino, Testuo Okane, Atsushi Fujimori, Kozo Okada, Toshio Manabe, Masahiro Yamashita, Hideo Kishida, Hiroshi Okamoto

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We report on the results of angle-resolved photoemission experiments on a quasi-one-dimensional (1D) [Formula presented]-chain compound [Formula presented], which shows a gigantic nonlinear optical effect. A “band” having about 500 meV energy dispersion is found in the first half of the Brillouin zone, but disappears at [Formula presented]. These spectral features are well reproduced by the [Formula presented] chain model with a small charge-transfer energy [Formula presented] compared with that of 1D Cu-O compounds. We propose that this smaller [Formula presented] is the origin of the absence of clear spin-charge separation in the photoemission spectra and the strong nonlinear optical effect.

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical Review Letters
Volume88
Issue number24
DOIs
Publication statusPublished - 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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