Physics – Condensed Matter – Superconductivity
Scientific paper
2012-04-12
Physics
Condensed Matter
Superconductivity
Submitted
Scientific paper
A theory for the electromagnetic response of type-II superconductors close beyond the critical state is presented. Our formulation relies on general physical principles applied to the superconductor as a thermodynamic system. Equilibrium critical states, externally driven steady solutions, and transient relaxation are altogether described in terms of free energy and entropy production. This approach allows a consistent macroscopic statement that incorporates the intricate vortex dynamic effects, revealed in non-idealized experimental configurations. Magnetically anisotropic critical currents and flux stirring resistivities are straightforwardly included in three dimensional scenarios. Starting from a variational form of our postulate, a numerical implementation for practical configurations is shown. In particular, several results are provided for the infinite strip geometry: voltage generation in multicomponent experiments, and magnetic relaxation towards the critical state under applied field and transport current. Explicitly, we show that for a given set of external conditions, the well established critical states may be utterly obtained as diffusive final profiles.
Badia Antonio
Lopez Carlos
No associations
LandOfFree
Electromagnetics close beyond the critical state: thermodynamic prospect does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Electromagnetics close beyond the critical state: thermodynamic prospect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetics close beyond the critical state: thermodynamic prospect will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-312274