Variations of Pairing Potential and Charge Distribution in Presence of a Non-magnetic Impurity

Details Variations of Pairing Potential and Charge Distribution in Presence of a Non-magnetic Impurity Variations of Pairing Potential and Charge Distribution in Presence of a Non-magnetic Impurity

2004-11-08

arxiv.org/abs/cond-mat/0411201v1

Physics

Condensed Matter

Superconductivity

2 pages, 2 figures, Physica B in press

Scientific paper

10.1016/j.physb.2005.01.152

Using an attractive Hubbard model we examine spatial variations of superconducting order parameter and local charge on a two dimensional lattice. For various band filling we show the effect of destruction of the order parameter around a non-magnetic impurity. In case of a half-filled system such destruction is accompanied by appearance of characteristic charge variations around the impurity with an isotropic distribution.

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