Abstract
The interlayer tunneling in high-temperature superconductors has been reconsidered beyond the mean-field approximation. The modification of the quasiparticle spectrum originating from the momentum-conserving interlayer transportation of Cooper pairs has been taken into account exactly. The pronounced reduction of the superconducting transition temperature when compared to the mean-field solution can be observed. Our self-consistent Green's functions approach allows for incorporation of Coulomb correlation and gives support for the mixed s- and d-wave scenario of high-temperature superconductivity.
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Cebula, A., Zieliński, J. & Mierzejewski, M. Interlayer Tunneling in High-Temperature Superconductors Beyond the Mean-Field Approximation. Journal of Superconductivity 11, 769–774 (1998). https://doi.org/10.1023/A:1022653425853
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DOI: https://doi.org/10.1023/A:1022653425853