Abstract
A comparison was made between four low-temperature properties of La and Ce. Whereas La behaves like a normal metal, Ce shows (i) low-temperature anomalies typical of "unstable shell" behavior and (ii) a transition into a superconducting state at K. Our experiments demonstrate for the first time that superconductivity can exist in a metal in which many-body interactions, probably magnetic in origin, have strongly renormalized the properties of the conduction-electron gas.
- Received 10 August 1979
DOI:https://doi.org/10.1103/PhysRevLett.43.1892
©1979 American Physical Society