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- W1495339974 abstract "We investigated Raman-forbidden signals in RBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// with R = Y or Pr, which lose intensity under illumination at low temperatures. These defect-induced peaks are only visible in oxygen-deficient material and for light polarized parallel to the copper-oxygen chains along the material's b-axis. In a first, two-laser based experiment we established that the bleaching effect of the light is polarization dependent as well. From this and other known properties we conclude that the signal is connected to the copper-oxygen chains, reflecting their state of disorder, and is thus closely related to aging and to the persistent photoconductivity effect in the material. In a second set of experiments we followed the temperature dependence of the Raman spectra and the intensity decrease." @default.
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- W1495339974 date "2003-06-01" @default.
- W1495339974 modified "2023-09-30" @default.
- W1495339974 title "Raman-study of photoinduced chain-oxygen ordering in RBa/sub 2/Cu/sub 3/O//sub 7-γ/" @default.
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- W1495339974 doi "https://doi.org/10.1109/tasc.2003.812193" @default.
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