CrRhIn5 is a new heavy-electron material that crystallizes in a quasi-2D st
ructure that can be viewed as alternating layers of CeIn3 and RhIn2 stacked
sequentially along the tetragonal c axis. Application of hydrostatic press
ure induces a first-order-like transition from an unconventional antoferrom
agnetic state to a superconducting state with T-c = 2.1 K.