Electronic instabilities in heavy-fermion compounds
Abstract
We discuss a series of experiments that evidence that most of the heavy-fermion compounds are close to an electronic or magnetic instability. In the approach of the magnetic instability, the volume plays a major role, as follows from a Grüneisen parameter study. We illustrate our viewpoint by a study of the appearance of long-range magnetic order on doping in UPt 3 and CeRu 2Si 2 and, in particular by an extensive study of the metamagnetic-like transition in the latter compound. Finally, we draw attention to the possibility of an unconventional superconducting ground state in the U-based heavy-fermion superconductors.
- Publication:
-
Physica B Condensed Matter
- Pub Date:
- May 1991
- DOI:
- 10.1016/0921-4526(91)90515-G
- Bibcode:
- 1991PhyB..171..190D