Avalanches Injecting Flux into the Central Hole of a Superconducting MgB2 Ring

Age Andreas Falnes Olsen, Tom Henning Johansen, Daniel Shantsev +4

Magneto-optical imaging was used to observe dendritic flux avalanches connecting the outer and inner edges of a ring-shaped superconducting MgB2 film. Such avalanches create heated…