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Author Núñez Regueiro, M.; Esquinazi, P.; Izbizky, M.A.; Durán, C.; Castello, D.; Luzuriaga, J. doi  openurl
  Title Tunneling systems in high temperature superconductors Type Journal Article
  Year 1988 Publication Annales de Physique Abbreviated Journal Ann. Phys. Fr.  
  Volume 13 Issue 5 Pages 401-406  
  Keywords acoustic wave absorption; acoustic wave velocity; barium compounds; high temperature superconductors; lanthanum compounds; rare earth compounds; strontium compounds; superconductive tunnelling; thermal conductivity of solids; tunnelling systems; high temperature superconductors; thermal conductivity; sound attenuation; sound velocity; model; low temperature specific heat; La Sr Cu O  
  Abstract We have measured the thermal conductivity, sound attenuation and relative variation of sound velocity of compounds of the La-Sr-Cu-O and RBa2Cu3O7 families, where R is a rare-earth. We have found that all these properties can be quantitatively correlated within a tunneling system model similar to that used in amorphous materials. This interpretation would naturally explain the anomalous linear term of the low temperature specific heat observed in these materials.  
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  Series Volume Series Issue Edition  
  ISSN 0003-4169 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:A1988Q715000009 Approved no  
  Call Number BT @ hernan @ Serial 264  
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