Abstract
A fully self-consistent procedure for obtaining the electronic structure of the superconductor ${\mathrm{CeCoIn}}_{5}$ is carried out by means of a local-density approximation potential within the augmented plane-wave framework. The results show that the electronic dynamic is fundamentally governed by the $4f$ states of Ce and $3d$ of Co which are close to ${E}_{F}.$ In addition, the weak hybridization between the states in the CeIn layer and the subsystem ${\mathrm{CoIn}}_{4}$ may imply a two dimensional structure which can serve as a scenario for a square Kondo/Ruderman-Kittel-Kasuya-Yosida lattice.
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