Izvorni znanstveni članak
Superconducting state parameters of (Ni33Zr67)1−xMx (M = Ti, V, Co, Cu) ternary amorphous superconductors
Aditya M. Vora
; Humanities and Social Science Department, S. T. B. S. College of Diploma Engineering, Opp. Spinning Mill, Varachha Road, Surat 395 006, Gujarat, India
Sažetak
A well known empty core (EMC) model potential of Ashcroft is used to investigate 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 N0 of (Ni33Zr67)1−xMx (M = Ti, V, Co, Cu) ternary amorphous superconductors. Five different types of local field correction functions, proposed by Hartree (H), Taylor (T), Ichimaru-Utsumi (IU), Farid et al. (F) and Sarkar et al. (S), are used in the present investigation to study the screening influence on the aforesaid properties. The TC values obtained from the Sarkar et al. (S) local field correction function are found in excellent agreement with available theoretical data. Quadratic TC equation has been proposed, which provides successfully the TC values of ternary amorphous alloys under consideration. Also, the present results are found to be in qualitative agreement with earlier reported data, which confirms the superconducting phase in the superconductors.
Ključne riječi
disordered systems; high-TC superconductors; electron-phonon interactions; pseudopotential; superconducting state parameters (SSP); ternary amorphous alloys
Hrčak ID:
302808
URI
Datum izdavanja:
1.9.2010.
Posjeta: 180 *