Modification of the Fermi-surface instability in UPt3 by Th substitution
Abstract
The magnetic susceptibility, specific heat, and electrical resistance of U1-xThxPt3 have been studied for x between 0.01 and 0.10 at temperatures between 1.5 and 20 K. In addition to the well known heavy-Fermion behavior, at 6.5 K a Fermi-surface instability is observed and it is concluded that the superconducting ground state in UPt3 is replaced by a spin-density wave. This result demonstrates the delicate balance between superconductivity and magnetism in UPt3.
- Publication:
-
Physical Review Letters
- Pub Date:
- August 1986
- DOI:
- 10.1103/PhysRevLett.57.1072
- Bibcode:
- 1986PhRvL..57.1072R
- Keywords:
-
- Fermi Surfaces;
- Magnetic Permeability;
- Magnons;
- Platinum Compounds;
- Superconductivity;
- Thorium Compounds;
- Uranium Compounds;
- Additives;
- Antiferromagnetism;
- Electrical Resistance;
- Fermions;
- Ground State;
- Specific Heat;
- Solid-State Physics;
- 72.15.Nj;
- 75.20.Hr;
- Collective modes;
- Local moment in compounds and alloys;
- Kondo effect valence fluctuations heavy fermions