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Superconducting state parameters of Cu-Zr metallic glasses

ADITYA M. VORA1,*

Affiliation

  1. Parmeshwari 165, Vijaynagar Area, Hospital Road, Bhuj – Kutch, 370 001, Gujarat, India

Abstract

The screening dependence investigations of the superconducting state parameters (SSP) viz. electron-phonon coupling strength λ , Coulomb pseudopotential μ * , transition temperature C T , isotope effect exponent α and effective interaction strength N V O of ten C C Cu Zr 100− metallic glasses have been reported using Ashcroft’s empty core (EMC) model potential. Three local field correction functions proposed by Hartree (H), Taylor (T) and Ichimaru-Utsumi (IU) are used in the present investigation to study the screening influence on the aforesaid properties. It is observed that the electron-phonon coupling strength λ and the transition temperature C T are quite sensitive to the selection of the local field correction functions, whereas the Coulomb pseudopotential μ * , isotope effect exponent α and effective interaction strength N V O show weak dependences on the local field correction functions. The C T obtained from IU-local field correction function are found an excellent agreement with available theoretical or experimental data. Also, the present results are found in qualitative agreement with other such earlier reported data, which confirms the superconducting phase in the metallic glasses..

Keywords

Pseudopotential, Superconducting state parameters, Cu-Zr metallic glasses.

Submitted at: Feb. 6, 2007
Accepted at: Aug. 18, 2007

Citation

ADITYA M. VORA, Superconducting state parameters of Cu-Zr metallic glasses, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 8, pp. 2498-2503 (2007)