Photoinduced metastability in YBa2Cu3Ox studied by in situ Raman scattering

M. Osada*, M. Kakihana, J. Bäckström, M. Kall, L. Borjesson, T. Frello, N. H. Andersen, R. Liang, P. Dosanjh, W. N. Hardy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We study the photoinduced metastable states in oxygen deficient YBa2Cu3Ox (x = 6.35 - 6.87). The states are identified by the intensity dependences of the CuO-chain resonance with photo irradiation and temperature. Below room temperature (RT) the CuO-chain resonance can be completely suppressed by irradiation with visible light polarized along the CuO chains, indicating photo-assisted oxygen ordering. Above RT the resonance intensity returns and saturates at T > 100°C. This behavior exactly mirrors the temperature dependence of chain oxygen ordering observed by hard X-ray diffraction. The stability of the photo-induced state is in line with the reported persistent photo-induced superconductivity effects.

Original languageEnglish
Pages (from-to)681-682
Number of pages2
JournalPhysica B: Condensed Matter
Volume284-288
Issue numberPART I
Publication statusPublished - 2000
Externally publishedYes

Keywords

  • Oxygen ordering
  • Photo-induced metastability
  • Raman scattering
  • Y-based cuprates

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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