Self-Organized Criticality Effect on Stability: Magneto-Thermal Oscillations in a Granular YBCO Superconductor
supr-con
2009-10-28 v1 Superconductivity
Abstract
We show that the self-organized criticality of the Bean's state in each of the grains of a granular superconductor results in magneto-thermal oscillations preceding a series of subsequent flux jumps. We find that the frequency of these oscillations is proportional to the external magnetic field sweep rate and is inversely proportional to the square root of the heat capacity. We demonstrate experimentally and theoretically the universality of this dependence that is mainly influenced by the granularity of the superconductor.
Keywords
Cite
@article{arxiv.supr-con/9503001,
title = {Self-Organized Criticality Effect on Stability: Magneto-Thermal Oscillations in a Granular YBCO Superconductor},
author = {L. Legrand and I. Rosenman and R. G. Mints and G. Collin},
journal= {arXiv preprint arXiv:supr-con/9503001},
year = {2009}
}
Comments
submitted to Physical Review Letters, 4 pages, RevTeX, 4 figures available as uufiles