CuO-chain Raman scattering and photoinduced metastability

M. Käll, M. Osada, M. Kakihana, L. Börjesson

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


Raman measurements in (Formula presented)6.72-6.82) high-(Formula presented) superconductors reveal intense phonon scattering due to an electronic resonance localized near oxygen vacancies on the CuO chains. Below room temperature the resonance can be photobleached in a manner similar to reported persistent photoinduced superconductivity effects, indicating photon-assisted oxygen ordering or electron vacancy capture. By comparing Raman and x-ray diffraction data we establish a correlation between the stability of the photoinduced state and the oxygen-ordering kinetics in the CuO chains.

Original languageEnglish
Pages (from-to)R14072-R14075
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number22
Publication statusPublished - 1998
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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