Superconductivity and random disorder in the infinite-range hopping model
R. Allub, A. Caro, C. Wiecko
DOI 10.1103/PhysRevB.36.8823 · Physical Review B
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Abstract
The diagonal disordered tight-binding model with infinite-range hopping and the Bardeen-Cooper-Schrieffer interaction term is solved. The results show that the zero-bandwidth limit is the mean-field approximation of the tight-binding nearest-neighbor model and that for a finite system disorder many induce superconductivity. Comparison with experimental results on amorphous alloys is made.
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