Abstract
We discuss the possible existence of a new superconducting state, the two-component superconducting (TCSC) state, of the Anderson-lattice model, when the antiferromagnetic Heisenberg exchange energy generated by the hybridization between the conduction band and localized orbitals exceeds a constant multiple of the Kondo energy . In this new state, holes in both the conduction band and localized orbitals exhibit two-particle off-diagonal long-range order, and the condensate wave function is a coherent mixture of both types of singlet pairs. We propose that the TCSC phase is a possible candidate for the superconducting phase in the high- copper oxides.
- Received 17 February 1989
DOI:https://doi.org/10.1103/PhysRevB.40.9404
©1989 American Physical Society