Abstract
Using the Kotliar and Ruckenstein slave boson formalism we consider the finite-U Andersonlattice. We study the appearance of superconductivity as a function of the Coulomb repulsion, densityand f-level location for s-wave and d-wave pairing symmetries. The results extend previous studies where theinfinite-U limit was considered, confirming that superconductivity remains as the Coulomb couplingincreases, if the attractive interaction is not weak. Superconductivity disappears for largeU as the filling of the heavy particles approaches one, as expected. SinceU is finite, superconductivity occurs, in general, for any band-filling being depressed nearhalf-filling, particularly for d-wave symmetry.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
