Variations of Pairing Potential and Charge Distribution in Presence of a Non-magnetic Impurity
نویسنده
چکیده
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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تاریخ انتشار 2004