Electronic instabilities in heavy-fermion compounds

✍ Scribed by A. de Visser; J. Flouquet; J.J.M. Franse; P. Haen; K. Hasselbach; A. Lacerda; L. Taillefer

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 882 KB
• Volume: 171
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(91)90515-g

✦ Synopsis

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 Griineisen parameter study. We illustrate our viewpoint by a study of the appearance of long-range magnetic order on doping in UPt, and CeRu,Si, 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.