Heavy Fermion Superconductivity and Magnetic Order in Noncentrosymmetric C e P t 3 S i

${\mathrm{C}\mathrm{e}\mathrm{P}\mathrm{t}}_{3}\mathrm{S}\mathrm{i}$ is a novel heavy fermion superconductor, crystallizing in the ${\mathrm{C}\mathrm{e}\mathrm{P}\mathrm{t}}_{3}\mathrm{B}$ structure as a tetragonally distorted low symmetry variant of the ${\mathrm{A}\mathrm{u}\mathrm{C}\mathrm{u}}_{3}$ structure type. ${\mathrm{C}\mathrm{e}\mathrm{P}\mathrm{t}}_{3}\mathrm{S}\mathrm{i}$ exhibits antiferromagnetic order at ${T}_{N}\ensuremath{\approx}2.2\text{ }\text{ }\mathrm{K}$ and enters into a heavy fermion superconducting state at ${T}_{c}\ensuremath{\approx}0.75\text{ }\text{ }\mathrm{K}$. Large values of ${H}_{c2}^{\ensuremath{'}}\ensuremath{\approx}\ensuremath{-}8.5\text{ }\text{…