Novel superconductivity and magnetism in CePt3Si

CePt3Si exhibits antiferromagnetic order at T-N approximate to 2.2 K and superconductivity (SC) at T-c approximate to 0.75 K. Large values of H-c2' approximate to -8.5 T/K and H-c2(0) approximate to 5 T indicate Cooper pairs formed out of heavy quasiparticles. The mass enhancement originates from Kondo interaction with a characteristic temperature T-K approximate to 8 K. NMR and muSR measurements evidence coexistence of SC and long-range magnetic order on a microscopic scale. Moreover. CePt3Si is the first heavy-fermion SC without an inversion symmetry. This gives rise to a novel type of the NMR relaxation rate 1/T-1 never reported before for other heavy-fermion superconductors. Studies of Si/Ge substitution allow us to establish a phase diagram.