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Magnetic relaxation in the "Bragg-glass" phase in BSCCO

C. J. van der Beek·S. Colson·M. Konczykowski·M. V. Indenbom·R. J. Drost·P. H. Kes
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Abstract

Magnetic relaxation in the Bragg-glass phase of overdoped Bi_2Sr_2CaCu_2O_8 crystals was investigated using time-resolved magneto-optical visualisation of the flux distribution. This has permitted us to extract the current-voltage characteristic, which can be well described by a power-law, although fits to a stretched exponential E \sim \exp(- j_{c} / j)^μ with 0.3 < μ< 0.8 are possible at long times in excess of 100 s.

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C. J. van der Beek, S. Colson, M. Konczykowski, M. V. Indenbom, R. J. Drost, P. H. Kes. 1999-12-17. Magnetic relaxation in the "Bragg-glass" phase in BSCCO. https://doi.org/10.1016/s0921-4534(00)00891-1

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