The Bean Critical State: Infinitely Unstable

Abstract

The threshold for creep in the Bean critical state is investigated. We perturb the Bean state by an energy $\Delta \epsilon$. We find that no matter how small $\Delta \epsilon$ is it will always be able to induce creep somewhere on the Bean profile. This finding has important consequences for the interpretation of low temperature creep phenomena in terms of quantum creep.

8 pages including 4 figures. Whole paper in uuencoded postscript file bean.uu

References in corpus (1)

• Confirmation of the Modified Bean Model from Simulations of Superconducting Vortices