Superconductivity News Forum (SNF)
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Vortex Dynamics at the Transition to the Normal State in YBa2Cu3O7-d Films
P.Bernstein a), J.F.Hamet a), M.T.González b,* and M.Ruibal Acuña b)
a)CRISMAT-ENSICAEN (UMR-CNRS 6508) F14050 Caen cedex 4, France b)LBTS, Departamento de Física da Materia Condensada Universidade de Santiago de Compostela E15782, Spain e-mail: [email protected] Abstract - We propose a description of the vortex dynamics for YBa2Cu3O7-d films. According to this description : i) the vortex motion is thermally activated along the twin boundaries of the films; ii) pinning is due to intersections of twin boundaries and iii) the transition to the normal state is due to vortex depinning. The predictions of this description are compared to data published by González et al. [Phys.Rev.B68,054514 (2003)]. Manuscript received April 2, 2007; revised May 1, 2007; Reference No.: ST1, Category |