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Critical temperature of layered highT c superconductors

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Zeitschrift für Physik B Condensed Matter

Abstract

We present and investigate a model for layered superconductors with single-electron interlayer tunneling and a unit cell containing an arbitrary number of sheets. For an effective pairing of two-dimensional origin,T c is found to be independent of the layer spacings. However, pairing of three-dimensional nature, allowing for spacing dependent coupling strength, fits remarkably well the observed climb inT c for the Bi−O and Tl−O layered systems, as the number of CuO2 planes in the unit cell is increased from two to four and six. This agreement points to a weak coupling pairing mechanism of three-dimensional origin.

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Author notes

  1. D. Baeriswyl

    Present address: Institut für Theoretische Physik, ETH Hönggerberg, CH-8093, Zurich, Switzerland

Authors and Affiliations

  1. IBM Research Division, Zürich Research Laboratory, Säumerstrasse 4, CH-8803, Rüschlikon, Switzerland

    T. Schneider & D. Baeriswyl

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  1. T. Schneider
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  2. D. Baeriswyl
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Schneider, T., Baeriswyl, D. Critical temperature of layered highT c superconductors. Z. Physik B - Condensed Matter 73, 5–8 (1988). https://doi.org/10.1007/BF01312147

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  • DOI: https://doi.org/10.1007/BF01312147

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