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Anisotropic 3D fluctuations conductivity in Bi2Sr2CaCu2O8+δ films

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Abstract

In zero applied magnetic field the fluctuation conductivity is measured and analyzed for a high-quality thin film (100 nm) of Bi 2 Sr 2 CaCu 2 O 8+δ grown on a MgO substrate. The two-band model formulas derived by Konsin et al. for the temperature dependence of the anisotropic three-dimensional (3D) paraconductivity in the vicinity of a superconducting phase transition are used. One of the two correlation lengths is critical and along with the other parameters of the model it determines the fluctuation conductivity Δσ(T).The global result of two-band model mimics closely d-wave-type pairing. The theory is compared with the experiment, and we obtained reasonable values and the slope of Δσ(T), the superconducting critical temperature T c and the coherence length ξ(0).

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Authors and Affiliations

  1. Institute of Physics, University of Tartu, Riia 142, 51014, Tartu, Estonia

    B. Sorkin, P. Konsin, S. K. Patapis, I. P. Papavasiliou, J. Pedarnig & R. Rössler

  2. Solid State Section, Dept. of Physics, University of Athens, Panepistimiopolis, Zografos, Greece

    S. K. Patapis & I. P. Papavasiliou

  3. Angewandte Physik, J.Kepler-Universität, Linz, Altenbergerstraße 69, A-4040, Linz, Austria

    R. Rössler

Authors
  1. B. Sorkin
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  2. P. Konsin
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  3. S. K. Patapis
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  4. I. P. Papavasiliou
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  5. J. Pedarnig
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  6. R. Rössler
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Sorkin, B., Konsin, P., Patapis, S.K. et al. Anisotropic 3D fluctuations conductivity in Bi2Sr2CaCu2O8+δ films. Journal of Low Temperature Physics 117, 1277–1281 (1999). https://doi.org/10.1023/A:1022548423454

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  • DOI: https://doi.org/10.1023/A:1022548423454

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