Abstract
We study the properties of superconductor in presence of a finite concentration of repulsive centers. The superconductor is described by the negative U Hubbard model while repulsive centers are treated as randomly distributed impurities with repulsive interaction. Analyzing the paring potential and local density of states at impurity sites we find a wide range of the system parameters where the π -like state could possibly be realized. Comparison of our results to the single repulsive center case is also given.
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