Correlation-drivend-wave superconductivity in Anderson lattice model: Two gaps

Marcin M. Wysokiński, Jan Kaczmarczyk, Józef Spałek
2016 Physical review B  
We present the full Gutzwiller-wave-function solution of the Anderson lattice model in two dimensions that leads to the correlation-driven multigap superconducting (SC) ground state with the dominant d_x^2-y^2-wave symmetry. The results are consistent with the principal properties of the heavy-fermion superconductor CeCoIn_5. We regard the pairing mechanism as universal and thus applicable to other Ce-based heavy-fermion compounds. Additionally, a gain in kinetic energy in the SC state takes
more » ... ce, as is also the case for high-temperature superconductors.
doi:10.1103/physrevb.94.024517 fatcat:syu54gbdwngivjd6nfoikomocy