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

C.J. van Der Beek (1) , S. Colson (1) , M. Konczykowski (1) , M.V. Indenbom (1) , R.J. Drost , P.H. Kes

1 LSI - Laboratoire des Solides Irradiés - Irradiated Solids Laboratory

Magnetic relaxation in the Bragg-glass phase of overdoped Bi2Sr2CaCu2O8 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 ~ exp(- jc/j)µ with 0.3 < µ < 0.8 are passible at long times in excess of 100 g. © 2000 Elsevier Science B.V All rights reserved.

Domaines: Supraconductivité [cond-mat.supr-con]

C.J. van Der Beek, S. Colson, M. Konczykowski, M.V. Indenbom, R.J. Drost, et al.. Magnetic relaxation in the "Bragg-glass" phase in BSCCO. Physica C: Superconductivity and its Applications, 2000, 341-348 (PART 3), pp.1279. ⟨hal-00726289⟩