Variations of Pairing Potential and Charge Distribution in Presence of a Non-magnetic Impurity
arXiv:cond-mat/0411201 · doi:10.1016/j.physb.2005.01.152
Abstract
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.
2 pages, 2 figures, Physica B in press