Novel superconducting properties on noncentrosymmetric heavy fermion CeRhSi3

We demonstrate an extremely high upper-critical-field, B-c2, in the noncentrosymmetric heavy-fermion superconductor CeRhSi3 for a magnetic field along the tetragonal c-axis. The robustness of the superconductivity over the magnetic field is outstanding among the known superconductors. The extremely large B-c2 is attributed to the absence of the paramagnetic pair-breaking effect characteristic of noncentrosymmetric superconductors. (C) 2009 Elsevier B.V. All rights reserved.