Volume 35, Number 6, August III 1996
|Page(s)||451 - 456|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Metastable photoinduced changes in the magnetic properties of Tl2Ba2CaCu2O8 thin films
Institute of Physics, Polish Academy of Sciences,
Al. Lotników 32/46, 02-668 Warsaw, Poland
2 Institute for Low Temperature Physics, National Academy of Sciences, 310164 Kharkov, Ukraine
3 National Laboratory of Superconductors, Institute of Physics, Chinese Academy of Sciences - 100080 Beijing, China
4 Department of Physics, Chalmers University of Technology - Gothenburg, Sweden
5 University of Gothenburg - 412 96 Gothenburg, Sweden
Accepted: 3 July 1996
We report on the persistent photoinduced changes of intrinsic (critical temperature) and extrinsic (FC magnetization and width of the hysteresis loop) superconducting parameters of thin films. The relaxation back to the original state is very slow, being of the order of days at room temperature. Qualitatively the observed photoinduced changes may be considered as manifestations of two different types of photosensitive pinning centers in the investigated films.
PACS: 74.25.Ha – Magnetic properties / 74.72.Fq – Tl-based compounds / 74.62.Dh – Effects of crystal defects, doping and substitution
© EDP Sciences, 1996
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