DISSIPATION INDUCED BY VORTEX FLUCTUATIONS IN BI2SR2CACU2O8 FILMS - MAGNETIC DEPENDENCE OF THE QUASI-ACTIVATION ENERGY

Authors
MURTAS F FASTAMPA R GIURA M MARCON R SARTI S SILVA E
Citation
F. Murtas et al., DISSIPATION INDUCED BY VORTEX FLUCTUATIONS IN BI2SR2CACU2O8 FILMS - MAGNETIC DEPENDENCE OF THE QUASI-ACTIVATION ENERGY, Physica. C, Superconductivity, 235, 1994, pp. 2677-2678
Citations number
9
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
235
Year of publication
1994
Part
4
Pages
2677 - 2678
Database
ISI
SICI code
0921-4534(1994)235:<2677:DIBVFI>2.0.ZU;2-9
Abstract
We present a set of resistivity measurements on different Bi2Sr2CaCu2O 8 films, as a function of temperature and magnetic field, in order to study the dissipation behaviour above the irreversibility line. The di ssipation is well described by a phenomenological model for the fluctu ative motion of fluxons in a region of phase inhomogeneities. The pres ence of a maximum of the glasslike activation energy, at about 2 kG is interpreted as 3D-2D crossover induced by the magnetic field.