A new heavy-fermion superconductor CeIrIn <sub>5</sub> : A relative of the cuprates?
A new heavy-fermion superconductor CeIrIn <sub>5</sub> : A relative of the cuprates?
CeIrIn5 is a member of a new family of heavy-fermion compounds and has a Sommerfeld specific heat coefficient of 720 mJ/mol-K2. It exhibits a bulk, thermodynamic transition to a superconducting state at Tc=0.40 K, below which the specific heat decreases as T2 to a small residual T-linear value. Surprisingly, the …