Abstract
We report a resistive investigation of superconductivity in the system La//2// minus //xSr//xCuO//4 minus //y on samples which have been analyzed by thermogravimetric techniques for oxygen deficiency determination. A maximum superconductive transition temperature is observed in La//2// minus //xSr//xCuO//4// minus //y near the tetragonal-orthorhombic phase transition, together with a resurgence of high temperature superconductivity in non-substituted La//2CuO//4// minus //y. Drastic localization effects are observed in the vicinity of x equals 0. 04 with no sign of superconductivity at low temperature.
| Original language | English |
|---|---|
| Pages (from-to) | 1181-1186 |
| Number of pages | 6 |
| Journal | Journal de physique Paris |
| Volume | 48 |
| Issue number | 7 |
| DOIs | |
| State | Published - 1987 |