METASTABLE PHOTOINDUCED CHANGES IN THE MAGNETIC-PROPERTIES OF TL2BA2CACU2O8 THIN-FILMS

Authors
SZYMCZAK H BARAN M GNATCHENKO SL SZYMCZAK R CHEN YF IVANOV ZG JOHANSSON LG
Citation
H. Szymczak et al., METASTABLE PHOTOINDUCED CHANGES IN THE MAGNETIC-PROPERTIES OF TL2BA2CACU2O8 THIN-FILMS, Europhysics letters, 35(6), 1996, pp. 451-456
Citations number
14
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
35
Issue
6
Year of publication
1996
Pages
451 - 456
Database
ISI
SICI code
0295-5075(1996)35:6<451:MPCITM>2.0.ZU;2-B
Abstract
We report on the persistent photoinduced changes of intrinsic (critica l temperature) and extrinsic (FC magnetization and width of the hyster esis loop) superconducting parameters of Tl2Ba2CaCu2O8 thin films. The relaxation back to the original state is very slow, being of the orde r 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.