Abstract
The compound Er becomes superconducting at a critical temperature of 8.7 K followed by a return to the normal state at a second critical temperature of 0.9 K. The return to the normal state at is coincident with the occurrence of long-range ordering of the magnetic moments of the ions which completely occupy a set of equivalent lattice sites.
- Received 30 March 1977
DOI:https://doi.org/10.1103/PhysRevLett.38.987
©1977 American Physical Society