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Author Bahrs, S.; Goni, A.R.; Maiorov, B.; Nieva, G.; Fainstein, A.; Thomsen, C. openurl 
  Title Raman-study of photoinduced chain-oxygen ordering in RBa2Cu3O7-delta Type Journal Article
  Year 2003 Publication (up) IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Abbreviated Journal  
  Volume 13 Issue 2 Pages 3192-3195  
  Keywords  
  Abstract We investigated Raman-forbidden signals in RBa2Cu3O7-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.  
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  Series Volume Series Issue Edition  
  ISSN 1051-8223 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000184242400193 Approved no  
  Call Number BT @ hernan @ Serial 209  
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