Photoinduced effects and oxygen dynamics in YBa2Cu3Ox

M. Osada, M. Kakihana, M. Käll, J. Bäckström, L. Börjesson, N.H. Andersen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Oxygen-deficient YBa2Cu3Ox (Y123) exhibits persistent photoconductivity when illuminated by visible light. We have investigated resonant Raman spectra as a function of excitation wavelength and temperature, which shed new light on photoinduced effects and chain oxygen dynamics in Y123. Experimental evidence suggests that the mechanism behind the unusual photoinduced effects primary involves photoinduced oxygen ordering. Our Raman data also constitute the non-diffraction observations of the superstructure phase transition in Y123. (C) 2001 Elsevier Science B.V. All rights reserved.
    Original languageEnglish
    JournalPhysica C: Superconductivity and its Applications
    Volume364-365
    Pages (from-to)545-548
    ISSN0921-4534
    DOIs
    Publication statusPublished - 2001

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