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Magnetization Decay due to Vortex Phase Boundary Motion in BSCCO

M. Konczykowski, C. J. van der Beek, S. Colson, M. V. Indenbom, P. H. Kes, Y. Platiel, E. Zeldov

cond-mat.supr-conarXiv:cond-mat/9912283

Abstract

We identify a new regime of decay of the irreversible magnetization in clean Bi2Sr2CaCu2O8 crystals, at induction values close to the ``second peak field'' at which the bulk critical current density steeply increases. A time window is identified during which the decay of the induction is controlled by the slow propagation of the phase transformation front across the sample.

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