Magnetic instability due to flux avalanches in superconductors

TL;DR

This paper presents a theoretical study of magnetic flux avalanches in superconductors, analyzing how thermal and electromagnetic perturbations can lead to instabilities due to vortex inertia.

Contribution

It introduces a linear analysis framework for flux avalanches considering vortex inertial effects in superconductors with flux flow characteristics.

Findings

Identifies conditions for instability onset in superconductors

Shows vortex inertia influences flux avalanche dynamics

Provides a theoretical basis for flux avalanche prediction

Abstract

We have studied theoretically the space-time evolution of the thermal and electromagnetic perturbation in a superconductor with the linear current-voltage characteristic in the flux flow regime. On the basis of a linear analysis of a set of differential equations describing small perturbations of temperature and magnetic field we will found that under some conditions an instability may occur in the sample, which takes into account an inertial properties of the vortices mas