Competition between magnetism and superconductivity was investigated for the newly discovered RNi2B2C superconductors with the magnetic rare earth elements R=Tm, Er, Ho, Dy, and Tb. Superconductivity is also observed for the compounds with magnetic R ions and their Tc's are approximately scaled by the de Gennes factor, which implies a very weak coupling between the rare earth magnetic moments and the conduction electrons due to a small conduction electron density at the rare earth site. Associated with the antiferromagnetic order of the rare earth moments, characteristic resistive transition under magnetic field was observed.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering