Abstract
Transverse-field muon spin relaxation measurements have been carried out on the heavy-fermion superconductor doped with small amounts of Pd. We find that the critical Pd concentration for the emergence of the large-moment antiferromagnetic phase is . At the same Pd content, superconductivity is completely suppressed. The existence of a magnetic quantum critical point in the phase diagram, which coincides with the critical point for superconductivity, provides evidence for ferromagnetic spin-fluctuation mediated odd-parity superconductivity, which competes with antiferromagnetic order.
- Received 30 March 2000
DOI:https://doi.org/10.1103/PhysRevLett.85.3005
©2000 American Physical Society