Magnetic flux dynamics in critical state of one-dimensional discrete superconductor

Details Magnetic flux dynamics in critical state of one-dimensional discrete superconductor Magnetic flux dynamics in critical state of one-dimensional discrete superconductor

2005-07-29

arxiv.org/abs/cond-mat/0507703v1

Physics

Condensed Matter

Superconductivity

7 pages, 5 figures

Scientific paper

10.1016/j.physc.2005.12.082

We give a theoretical description of avalanche-like dynamics of magnetic flux in the critical state of "hard" type-II superconductors using a model of a one-dimensional multijunction SQUID that well reproduces the main magnetic properties of these objects. We show that the system under consideration demonstrates the self-organized criticality. The avalanches of vortices manifest themselves as jumps of the total magnetic flux in the sample. The sizes of these jumps have a power-law distribution. Our results are in qualitative agreement with experiments.

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