Abstract
We report experimental data about the influence of Ni substitution on the properties of the high-Tc superconductor La1.85Sr0.15Cu1-xNixO4-y, 0≤x≤0.05. Superconductivity is totally suppressed above x=0.04 and the Curie law observed at x=0.05 reveals an effective magnetic moment of 0.7μB instead of 3 μB as for spin (1/2. This result is explained by the existence of a singly &) level. Possibilities for non-s-wave superconductivity are also discussed in conjunction with our experimental data.
| Original language | English |
|---|---|
| Pages (from-to) | 5132-5135 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 37 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1988 |