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Fluctuations of the Order Parameter's Phase in Layered Superconductors

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Abstract

The influence of the quantum fluctuations of the order parameter's phase on the critical temperature T c is studied for a Josephson coupled layered superconductor. Two characteristic critical temperatures exist for a system, namely the superconducting critical temperature T (2) c for a single layer estimated by the mean-field theory and the transition temperature for the outset or the superconducting phase coherence T* c . The true critical temperature T c is shown to vary inside the intervals T* c T c T (2) c . For a strong quantum phase fluctuation limit, the superconducting layers become decoupled.

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Çakiroglu, Ö. Fluctuations of the Order Parameter's Phase in Layered Superconductors. Journal of Superconductivity 13, 639–644 (2000). https://doi.org/10.1023/A:1007893405504

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