Modeling the effect of chemical substitution and high pressure on the electronic instabilities of the ternary intermetallics CeMIn5 (M = Co, Rh, Ir)

The phase diagram of the ternary intermetallics CeMIn5 (M = Co, Rh, In) presents new forms of competition and coexistence between magnetic and superconducting phases. We briefly review the experiments that have outlined the temperature-pressure phase diagram of these materials, emphasizing the phenomenon of reversible tuning. Expanding a recently proposed model for the coexistence of antiferromagnetism and superconductivity, we study the role of electronic doping on the ordering temperatures of these phases. (orig.)