Magnetic flux dynamics in critical state of one-dimensional discrete superconductor
arXiv:cond-mat/0507703 · doi:10.1016/j.physc.2005.12.082
Abstract
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.
7 pages, 5 figures