Abstract
The screening dependence of the superconducting state parameters (SSP), viz. electron–phonon coupling strength λ, Coulomb pseudopotential μ*, transition temperature TC, isotope effect exponent α and effective interaction strength NOV of some monovalent (Li, Na, K, Rb and Cs), divalent (Mg and Zn) and polyvalent (In, Tl, Sn, Pb and Bi) metals have been carried out by a well-known Ashcroft's empty core (EMC) model pseudopotential. We have employed here five different forms of the local field correction functions proposed by Hartree (H), Taylor (T), Ichimaru–Utsumi (IU), Farid et al (F) and Sarkar et al (S) to study the exchange and correlation effects on the present investigations for the first time. A very strong influence of all the exchange and correlation functions is found in the present study. Our results are in fair agreement with other available theoretical as well as experimental data.A strong dependency of the SSP of metals on the valence Z is found.
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