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Paraconductivity Measurements and Comparative Studies of Fluctuations in BiSrCaCuO, YBaCuo and YBaCuO with Gd Substitution

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Physics and Materials Science of High Temperature Superconductors, II

Part of the book series: NATO ASI Series ((NSSE,volume 209))

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Abstract

Information concerning the dimensionality of the superconductive fluctuations in the new high temperature superconductors can be derived from the excess conductivity (or paraconductivity) near the transition temperature. Here the “lowering” of the sample resistance in the same temperature region is used for extraction of dimensionality and generally for comparative studies of the critical behaviour of three different samples such as YBa2Cu3O7, Y0.8Gd0.2Ba2Cu3O7 and Bi0.85Pb0.15SrCa1.2CU2O6. The experimental data of the three samples show a similar behaviour with some distinct differences depending rather on the “metallurgical” state of the material than the composition itself. A logarithmic behaviour is present for YBaCuO and Y(Gd)BaCuO samples not close to the critical temperature and, the most important, closer to Tc YBaCuO shows a fractal behaviour, observed for the first time, similar to the one of Bi-compound observed many times before.

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Author information

Authors and Affiliations

  1. Physics Department, Solid State Section, University of Athens, Panepistimiopolis, Zografos, Greece

    S. K. Patapis, L. Sideridis & G. Apostolopoulos

  2. Institut de Physique B5, Universite de Liege, B-4000, Liege, Belgium

    M. Ausloos

  3. Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California, USA

    H. L. Luo

  4. Kernforschungszentrum Karlsruhe, Institut fur Nucleare Festkorperphysik, D-7500, Karlsruhe, Germany

    C. Politis

  5. Electromagnetism Group, Dept. of Physics, Universitat Autonoma de Barcelona, Barcelona, Bellatera, 08193, Spain

    T. Puig, M. Pont & J. S. Munoz

  6. Argonne National Laboratory, 9700 South Cass Ave., Argonne, IL, 60439-4838, USA

    U. Balachandran

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  1. S. K. Patapis
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  2. L. Sideridis
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  3. G. Apostolopoulos
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  4. M. Ausloos
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  5. H. L. Luo
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  6. C. Politis
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  7. T. Puig
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  8. M. Pont
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  9. J. S. Munoz
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  10. U. Balachandran
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Editor information

Editors and Affiliations

  1. Materials Engineering and Systems, Pittsburgh, Pennsylvania, USA

    Ram Kossowsky

  2. Laboratoire de Cristallographie et Sciences des Materiaux, ISMRA, Caen, France

    Bernard Raveau

  3. II Physikalisches Institut, University of Köln, Köln, Germany

    Dieter Wohlleben

  4. Department of Physics, University of Athens, Athens, Greece

    Stamatis K. Patapis

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© 1992 Springer Science+Business Media Dordrecht

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Patapis, S.K. et al. (1992). Paraconductivity Measurements and Comparative Studies of Fluctuations in BiSrCaCuO, YBaCuo and YBaCuO with Gd Substitution. In: Kossowsky, R., Raveau, B., Wohlleben, D., Patapis, S.K. (eds) Physics and Materials Science of High Temperature Superconductors, II. NATO ASI Series, vol 209. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2462-1_52

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  • DOI: https://doi.org/10.1007/978-94-011-2462-1_52

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-5086-9

  • Online ISBN: 978-94-011-2462-1

  • eBook Packages: Springer Book Archive

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