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Author (up) Braun, E.; Jackel, G.; Roden, B.; Sereni, J.G.; Wohlleben, D. doi  openurl
  Title Comparative study of the specific heat of superconducting and non-superconducting YBa2Cu3O7-x Type Journal Article
  Year 1988 Publication Zeitschrift für Physik B Condensed Matter Abbreviated Journal Z. Phys. B  
  Volume 72 Issue 2 Pages 169-173  
  Keywords  
  Abstract We have measured the specific heat, the electrical resistance and the magnetic susceptibility of YBa2Cu3O7−x in a superconducting (sc) and in a non-superconducting (nsc) version. The latter was obtained by inducing a small loss of oxygen. In the sc sample we find a jump of the specific heat with ΔC=3.6 J mole−1 K−1. Below the maximum nearT c the specific heat of the sc version drops too fast for an electronic effect alone: there is a cross-over from excess to deficiency already at 0.9T c . The specific heat of the nsc version shows a change of slope in the temperature range between 70 and 80 K, which indicates the existence of a second specific heat anomaly, which apparently exists independently of that due to the onset of superconductivity and explains at least partially the premature crossover.  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0722-3277 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:A1988P796500004 Approved no  
  Call Number BT @ hernan @ Serial 125  
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