The ratio of the energy gap e(O) for T = 0 to the transition temperatur~e T c, the value of energy gap e(T) near T c, and the expression for the transition temperature are calculated within the framework of the strong coupling theory.
The equation for the renormalized pairing self-energy part, derived from Eliashberg' 8 equations (reference (1)) at the transition temperature (Tc) is (2) Here A, is the effective coupling constant, w = (2n+ 1)nT. We assume that the phonon spectrum is described approximately by one Einstein peak with frequency w and momentum q coupled superconductors and we neglect it. where A are normalized.Ai : >)By applying this method to equation (l), we derive the relation for the calculation of Tc
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