Abstract
In this paper, we have modified the Cooper theory by considering a biexcitonic attractive interaction for high T c superconductors. We have developed an expression for (2Δ/K B T c) as a function of phonon and biexciton mediated coupling constants. For the sake of simplicity, we use a two-square-well potential model (electron–phonon and electron–biexciton). The calculated values of (2Δ/K B T c) show good agreement with experimental values.
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Pandey, R.K., Singh, S.P. & Singh, P. Effect of Biexciton on Cooper Pairing in High Tc Superconductors. Journal of Superconductivity 12, 441–443 (1999). https://doi.org/10.1023/A:1007730105674
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DOI: https://doi.org/10.1023/A:1007730105674