Superconducting State Parameters of Bulk Amorphous Alloys

Authors Aditya M. Vora

Humanities and Social Science Department, S.T.B.S. College of Diploma Engineering,

Shri Swami Atmanand Sarswati Vidya Sankul, Opp. Kapodra Police Station, Varachha Road, Surat 395 006, Gujarat, India

Issue Volume 4, Year 2012, Number 4
Dates Received 13 January 2012; published online 29 December 2012
Citation Aditya M. Vora, J. Nano- Electron. Phys. 4 No 4, 04010 (2012)
PACS Number(s) 61.43.Dq; 71.15.Dx; 74.20. – z; 74.70.Ad
Keywords Pseudopotential (15) , Superconducting state parameters (SSP), Bulk amorphous alloys.
Well recognized empty core (EMC) pseudopotential of Ashcroft is used to investigate the superconducting state parameters viz; electron-phonon coupling strength λ, Coulomb pseudopotential μ*, transition temperature TC, isotope effect exponent α and effective interaction strength NOV of some (Ni33Zr67)1 – xVx (x = 0, 0.05, 0.1, 0.15) bulk amorphous alloys. We have incorporated 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) to show the effect of exchange and correlation on the aforesaid properties. Very strong influence of the various exchange and correlation functions is concluded from the present study. The TC obtained from Sarkar et al. (S) local field correction function are found an excellent agreement with available theoretical data. Quadratic TC equation has been proposed, which provide successfully the TC values of bulk amorphous alloys under consideration. Also, the present results are found in qualitative agreement with other such earlier reported data, which confirms the superconducting phase in the s bulk amorphous alloys.

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