Flow-Equation method for a superconductor with magnetic correlations
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چکیده
The flow equation method has been used to calculate the energy of single impurity in a superconductor for the Anderson model with U 6= 0.We showed that the energy of the impurity depends only of the ∆R (renormalized order parameter) which depends of the renormalized Hubbard repulsion U. For a strong Hubbard repulsion U = U and ∆ = ∆ the effect of the s− d interactions are nonrelevant,a result which is expected for this model
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تاریخ انتشار 2008