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Author (up) Fainstein, A.; Etchegoin, P.; Guimpel, J. openurl 
  Title Raman study of photoinduced chain-fragment ordering in GdBa2Cu3Ox thin films Type Journal Article
  Year 1998 Publication PHYSICAL REVIEW B Abbreviated Journal  
  Volume 58 Issue 14 Pages 9433-9439  
  Keywords  
  Abstract Raman scattering experiments on oxygen deficient GdBa2Cu3Ox thin films (x=6.53, 6.7, 6.8, and 6.93) as a function of photoexcitation and annealing induced oxygen disorder are presented. Raman lines, unambiguously assigned to copper and oxygen vibrations involving atoms at the end of Cu-O chains, are used as markers for the existence of short chain fragments. The dynamics of chain conjunction and fragmentation was monitored by the peak intensity dependences with photoexcitation time and annealing temperature. These results demonstrate the presence of photoassisted oxygen ordering in these high-T-c superconductors, and give definitive support for its ultimate role in the phenomena of persistent photoconductivity and photoinduced superconductivity. [S0163-1829(98)04037-5].  
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  Series Volume Series Issue Edition  
  ISSN 0163-1829 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000076486700083 Approved no  
  Call Number BT @ hernan @ Serial 183  
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