Superconducting Pairing Amplitude and Local Density of States in Presence of Repulsive Centers

Details Superconducting Pairing Amplitude and Local Density of States in Presence of Repulsive Centers Superconducting Pairing Amplitude and Local Density of States in Presence of Repulsive Centers

2006-02-06

arxiv.org/abs/cond-mat/0602120v1

Physics

Condensed Matter

Superconductivity

2 pages, 2 figures, Physica B in press

Scientific paper

10.1016/j.physb.2006.01.533

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 $\pi$ - like state could possibly be realized. Comparison of our results to the single repulsive center case is also given.

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