Study of Superconductivity in Li based binary alloys of alkali metals using HFP Pseudopotential Technique
Keywords:
Li, AlloysAbstract
By using technique of Harrison’s First Principle Pseudopotential we studied superconductivity in binary alloys of Li with other alkali metals. Historically HFP Pseudopotential method has been rarely used. Unique opportunity is explored to use HFP Pseudopotential technique to study SSP like of alkali metal alloys of Li. SSP of Li and Li based binary alloys of alkali metals at varying concentration 0.9 to 0.1 were computed through McMillan’s formalism (1968). V-S form of screening is used in present work for obtaining SSP of Li based alkali metal binary alloys. As a variant SSP are studied using three different forms of eigenvalues of Herman-Skillman (HS), Hafner (H) and Clementi (C). Comparison of present values of SSP with available experimental and theoretical findings by other scholars are highly encouraging. Further, results computed in our present work will enrich the data bank for SSP of alkali-alkali binary alloy.
References
H. Kamerlingh Onnes, Comm. Leiden (1911) Nr I22b, I24C; 1913, Nr 133a, I33C.
H. Kamerlingh Onnes, Comm. Leiden (I913) Nr. I33a to I33 d.
W. Meissner (1932) Ergebnisse der Exakten Naturwissenschaften 11, Spring Berlin, p. 219
Matthias B. T. (1973) Physica 69 54
Matthias, B. T (1957) Prog. Low Temperature. Physics. 2, 138–150
Wittig J. (1970) Phys. Rev. Lett. 24 812-5
J. Wittig (1982) SC in d &f-Band Metals, edited by Buckel W. and Weber W. p. 321–29.
Boettger J.C. and Trickey S.B. (1985) Phys. Rev. B 32 3391
Lin T.H. and Dunn K.J. (1986) Phys. Rev. B 33 807
Harrison W. A. (1966) “Pseudopotential in the theory of metals” (Benj. Inc New York)
McMillan (1968) Phys. Rev. 187 331
Allen and Dynes (1975) Phys. Rev. B12 905
Nowotny H. (1976) Physica status solidi b 77 2 623–629
Leavens C. R. (1976) Solid State Comm. 19 395
Jain S. C. and Kachhawa C. M (1980) Indian J. Pure Appl. Phys 18 489
Sharma et al. (2003) IJP&AP 41 301-304
