Heavy fermion superconductivity and magnetic order in non-centrosymmetric \(CePt_3Si\)

Abstract

\(\rm CePt_3Si\) is a novel heavy fermion superconductor, crystallising in the \(\rm CePt_3B\) structure as a tetragonally distorted low symmetry variant of the \(\rm AuCu_3\) structure type. \(\rm CePt_3Si\) exhibits antiferromagnetic order at \(T_N \approx 2.2\) K and enters into a heavy fermion superconducting state at \(T_c \approx 0.75\) K. Large values of \(H_{c2}' \approx -8.5\) T/K and \(H_{c2}(0) \approx 5\) T refer to heavy quasiparticles forming Cooper pairs. Hitherto, \(\rm CePt_3Si\) is the first heavy fermion superconductor without a center of symmetry.