Pressure-Induced Superconductivity in Quasi-2D ${\mathrm{CeRhIn}}_5$

${\mathrm{CeRhIn}}_5$ is a new heavy-electron material that crystallizes in a quasi-2D structure that can be viewed as alternating layers of ${\mathrm{CeIn}}_3$ and ${\mathrm{RhIn}}_2$ stacked sequentially along the tetragonal $c$ axis. Application of hydrostatic pressure induces a first-order-like transition from an unconventional antiferromagnetic state to a superconducting state with $T_c=2.1\mathrm{}\mathrm{K}$.