On the Superconductivity in the Induced Pairing Model
arXiv:cond-mat/0212367 · doi:10.1016/S0921-4534(03)00641-5
Abstract
The two component model of coexisting local electron pairs and itinerant fermions coupled via charge exchange mechanism, which mutually induces superconductivity in both subsystems, is discussed. The cases of isotropic s-wave and anisotropic pairing of extended s and d_{x^2-y^2} -wave symmetries are analyzed for a 2D square lattice within the BCS-mean field approximation and the Kosterlitz-Thouless theory. We determined the phase diagrams and superconducting characteristics as a function of the position of the local pair (LP) level and the total electron concentration. The model exhibits several types of interesting crossovers from BCS like behavior to that of LP's. Some of our results are discussed in connection with a two-component scenario of preformed pairs and unpaired electrons for exotic superconductors.
Proceedings of the 3rd Polish-US Workshop on Magnetism and Superconductivity of Advanced Materials, July 14-19, 2002, Ladek Zdroj (Poland) to appear in Physica C
References in corpus (8)
- The BCS-BEC Crossover in a Gas of Fermi Atoms with a Feshbach Resonance
- On the superconductivity in the system with preformed pairs
- Manifestations of the pseudogap in the BOSON-FERMION model for Bose-Einstein condensation driven Superconductivity
- Non-linear feedback effects in coupled Boson-Fermion systems
- On the pseudogap phase in high-T_c superconductors
- Stripes, Vibrations and Superconductivity
- Breakdown of Landau Fermi liquid properties in the Boson-Fermion model
- Anisotropic Superconductivity in the Induced Pairing Model
Cited by in corpus (6)
- Interplay between the single particle and collective features in the boson fermion model
- Effects of Disorder on Superconductivity of Systems with Coexisting Itinerant Electrons and Local Pairs
- Superconductivity in a two-component model with local electron pairs
- On the interband pairing in doped graphane
- On the Boson-Fermion resonant model on a lattice
- Effect of boson on-site repulsion on the superfluidity in the boson-fermion-Hubbard model