Interplay between charge density wave and superconductivity in multi-band systems with inter-band Coulomb interaction
Nei Lopes,
Daniel Reyes,
Mucio A. Continentino
et al.
Abstract:In this work we study the competition or coexistence between charge density wave (CDW) and superconductivity (SC) in a two-band model system in a square lattice. One of the bands has a net attractive interaction (J d ) that is responsible for SC. The model includes on-site Coulomb repulsion between quasi-particles in different bands (U dc ) and the hybridization (V ) between them. We are interested in describing inter-metallic systems with a d-band of moderately correlated electrons, for which a mean-field app… Show more
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