The vortex order-disorder phase transition line in (La0.937Sr0.063)2CuO4 exhibits a steep concave decrease throughout the whole temperature range. This unusual behavior is explained postulating that in (La0.937Sr0.063)2CuO4, both thermal and disorder-induced fluctuations take part in destabilizing the vortex lattice. Irradiation of the samples with electrons causes a significant decrease in both the magnitude of the transition field and the curvature of the transition line. These results are interpreted as caused by the enhanced role of disorder-induced fluctuations as compared with thermal fluctuations.
|Number of pages||2|
|Journal||Physica C: Superconductivity and its Applications|
|State||Published - May 2003|
|Event||proceedings of the 23rd international conference on low temper - Hiroshima, Japan|
Duration: 20 Aug 2002 → 27 Aug 2002
Bibliographical noteFunding Information:
A.S. acknowledges support from the Israel Science Foundation. This research was supported by The Israel Science Foundation––Center of Excellence Program, and by the Heinrich Hertz Minerva Center for High Temperature Superconductivity.
- Electron irradiation
- High-temperature superconductors
- Vortex matter
- Vortex phase transitions