ISSN:
1572-9605
Keywords:
2D superconductors
;
flow equations
;
magnetic correlations
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract The flow equation method has been used to calculate the energy of single impurity in a superconductor for the Anderson model with U≠0. We showed that the energy of the impurity depends only on the Δ R 2 (renormalized order parameter), which depends on the renormalized Hubbard repulsion U R. For a strong Hubbard repulsion U R = U and ΔR = ΔI the effect of the s–d interactions are nonrelevant, a result that is expected for this model.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1022637022219
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