We present a set of resistivity measurements on different Bi2Sr2CaCu2O8 films, as a function of temperature and magnetic field, in order to study the dissipation behaviour above the irreversibility line. The dissipation is well described by a phenomenological model for the fluctuative motion of fluxons in a region of phase inhomogeneities. The presence of a maximum of the glasslike activation energy, at about 2 kG is interpreted as 3D-2D crossover induced by the magnetic field.

MURTAS F, FASTAMPA R, GIURA M, MARCON R, SARTI S, & SILVA E (1994). DISSIPATION INDUCED BY VORTEX FLUCTUATIONS IN BI2SR2CACU2O8 FILMS - MAGNETIC DEPENDENCE OF THE QUASI-ACTIVATION ENERGY. PHYSICA. C, SUPERCONDUCTIVITY, 235, 2677-2678 [10.1016/0921-4534(94)92559-3].

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

SILVA, Enrico
1994

Abstract

We present a set of resistivity measurements on different Bi2Sr2CaCu2O8 films, as a function of temperature and magnetic field, in order to study the dissipation behaviour above the irreversibility line. The dissipation is well described by a phenomenological model for the fluctuative motion of fluxons in a region of phase inhomogeneities. The presence of a maximum of the glasslike activation energy, at about 2 kG is interpreted as 3D-2D crossover induced by the magnetic field.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/135244
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