Theoretical Investigation of Superconducting State Parameters of Some Bulk Metallic Glasses Using Pseudopotential Approach

Abstract

The pseudopotential-based formulation suggested by MacMillan utilized for computing the five most important superconducting state parameters (SSPs) given by electron–phonon coupling strength λ, Coulomb pseudopotential μ∗, transition temperature TC, isotope effect exponent α, and effective interaction strength NOV of 20 bulk metallic glasses (BMGs) having the range of binary to hexanary combinations made from simple and non-simple metallic elements for the first time are reported in the present study. Shaw’s constant core pseudopotential with five different types of local field functions given by Hartree (H), Taylor (T), Ichimaru-Utsumi (IU), Farid et al. (F), and Sarkar et al. (S) are used in the present calculation for seeing the screening impacts on the abovementioned parameters. It is also observed from the present study that two parameters λ and TC are shown quite sensitive to the local field functions in contrast with the other three parameters. Also, the present outcomes support the superconducting nature in the considered BMG systems.