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Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
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STUDY OF SUPERCONDUCTING STATE PARAMETERS OF AMORPHOUS ALLOYS
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Theoretical study of superconducting state parameters (SSP) viz. the electron-phonon coupling strength, Coulomb pseudopotential, transition temperature, isotope effect exponent and effective interaction strength of five (x = 0.0, 0.06, 0.10, 0.15 and 0.20) ternary amorphous alloys is carried out using the Ashcroft’s empty core (EMC) model potential. Five local-field correction functions due to Hartree (H), Taylor (T), Ichimaru–Utsumi (IU), Farid et al. (F) and Sarkar et al. (S) are used to study the screening influence. It is observed that the electron-phonon coupling strength and the transition temperature are quite sensitive to the selection of the local-field correction functions, whereas the Coulomb pseudopotential, isotope effect exponent and effective interaction strength show weak dependences on the local-field correction functions. The value of Tc obtained from H-local-field correction function are found in excellent agreement with available experimental data. Also, the present results are found in qualitative agreement with other such earlier reported data, which confirms the superconducting phase in the ternary amorphous alloys.