Abstract

Superconducting and magnetic properties of the heavy fermion superconductor CePt 3 Si were studied in a polycrystalline sample by means of the muon spin rotation and relaxation method. The muon Knight shift is invariant on passing the temperature through T c down to 20 mK at 17 kOe, indicating that the local spin susceptibility does not change in the superconducting state. The possible symmetry of superconductivity and the magnetic state in CePt 3 Si are discussed.

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