A possible scenario for thermally activated avalanches in type II superconductors

TL;DR

This paper presents a cellular automaton model demonstrating thermally activated avalanches in type-II superconductors, revealing power-law distributions and scaling relations that align with experimental observations.

Contribution

It introduces a simple stochastic cellular automaton model that explains thermally activated avalanches independently of pinning mechanisms.

Findings

Avalanches follow power-law distributions.

Scaling relations match experimental data.

Avalanche conditions are pinning-independent.

Abstract

Using a simple cellular automaton with stochastic rules we show the possible emergence of thermally activated avalanches (power law distributed) in type-II superconductors. Scaling relations between the exponents characterizing these distributions and those obtained from field driven experiments are derived and proved through simulations. It is also shown that the conditions for the appearance of these avalanches are independent of the pinning mechanism. The relevance of our simulations for recently reported experimental results is also outlined.