(a) Two superconducting domes in Rh-doped CeIrIn₅ and CeIrIn₅ under pressure. (b) Field-angle dependence of the ac specific heat in different magnetic fields for CeIrIn₅, where p = 2.05 GPa and T = 0.3 K. (c) Theoretical B–T phase diagram for the four-fold field-angle dependence of the specific heat, together with the experimental data of CeIrIn₅ (adapted from Ref. [21]).