Abstract
Ce single crystals prepared with an excess of Cu exhibit low residual resistivity , low susceptibility , small unit-cell volume , and bulk "heavy-fermion" superconductivity below 0.65 K, while crystals grown from stoichiometric melt show higher and , larger , but no superconductivity. Ce behaves as an -state superconductor with strongly temperature-dependent pair breaking and almost isotropic Fermi surface.
- Received 19 August 1983
DOI:https://doi.org/10.1103/PhysRevLett.52.469
©1984 American Physical Society