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Superconducting fluctuations in the thermoelectric power and resistivity of Bi-based polycrystalline cuprates

P de Villiers, R A Doyle and V V Gridin

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The authors report a study of fluctuation effects in the resistance R, and the thermoelectric power S, of melt-processed BiSrCaCuO (2212) and sintered BiPbSrCaCuO (2223) polycrystalline materials. Applying several theoretical models to the analysis of experimental results, they extract a number of physical parameters for these systems: the Fermi energy, interlayer coupling strength and atomic Debye temperatures for Bi and Pb. The results are in good agreement with data obtained in other studies of similar materials.


PACS

74.40.+k Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.)

74.72.Hs Bi-based cuprates

74.25.Fy Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)

Subjects

Superconductivity

Dates

Issue 47 (23 November 1992)



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