Fluctuation Contributions to the Transport Properties of Hg1.4 Ba2Ca2Cu3O8+δ and Bi2Sr1.8Ca1.2Cu2O8 Polycrystalline Superconductors

  • H. Bougrine
  • S. Dorbolo
  • R. Cloots
  • M. Pekala
Chapter
Part of the NATO Science Series book series (ASHT, volume 63)

Abstract

After some discussion on the precision and originality of the measurement methods used in order to measure the electrical resistivity and simultaneously the thermopower and the thermal conductivity as a function of temperature (20–300K), we report on a study of the superconductivity fluctuation contributions of these transport properties for Hg-BaCaCuO (1223) and BiSrCaCuO (2212) polycrystalline superconductors. The normal-state background of the thermal conductivity and the electrical resistivity is found to obey a linear function of temperature, while the thermopower is found to obey a cubic function of temperature above the critical temperature. After substracting the background, the fluctuation regimes are extracted. The results axe discussed and compared to the literature with respect to the system effective dimensionality.

Keywords

Thermal Conductivity Electrical Resistivity Critical Temperature Phonon Thermal Conductivity Seal Quartz Ampoule 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer Science+Business Media Dordrecht 1999

Authors and Affiliations

  • H. Bougrine
    • 1
  • S. Dorbolo
    • 2
  • R. Cloots
    • 3
  • M. Pekala
    • 4
  1. 1.S.U.P.R.A.S., Montefiore Institute of Electricity B28University of LiègeLiègeBelgium
  2. 2.S.U.P.R.A.S., Institute of Physics B5University of LiègeLiègeBelgium
  3. 3.S.U.P.R.A.S., Chemistry Institute B6University of LiègeLiègeBelgium
  4. 4.Departement of ChemistryUniversity of WarsawWarsawPoland

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