The electronic structure of Ce-based 115's

The Ce and Pu-based 115's embody the notion that reduced dimensionality and increased spin fluctuation energy scales are good for unconventional superconductivity. Often these materials are considered to be quasi two-dimensional systems similar in spirit to the high temperature cuprate superconductors. However, in reality the systems are rather three dimensional. Consequently, we construct an accurate down-folded Hamiltonian from ab-initio electronic structure calculations for the Ce-based 115 materials. We subsequently perform a constrained RPA calculation to obtain effective Coulomb parameters as a starting point to further investigate the magnetic, superconducting, and heavy fermion phenomena which these materials possess.