CuO-chain Raman scattering and photoinduced metastability in YBa2Cu3Ox

M. Käll, M. Osada, M. Kakihana, L. Börjesson, T. Frello, J. Madsen, N. H. Andersen, R. Liang, P. Dosanjh, W. N. Hardy

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


Raman measurements in YBa2Cu3Ox (x = 6.72-6.82) high-Tc 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
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number22
Publication statusPublished - 1998 Jun 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


Dive into the research topics of 'CuO-chain Raman scattering and photoinduced metastability in YBa<sub>2</sub>Cu<sub>3</sub>O<sub>x</sub>'. Together they form a unique fingerprint.

Cite this