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

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dc.creatorOlsen, Age Andreas Falnes
dc.creatorJohansen, Tom Henning
dc.creatorShantsev, Daniel
dc.creatorChoi, Eun-Mi
dc.creatorLee, Hyun-Sook
dc.creatorKim, Hyun Jung
dc.creatorLee, Sung-Ik
dc.date2007-05-07
dc.date.accessioned2026-07-07T07:59:56Z
dc.date.available2026-07-07T07:59:56Z
dc.descriptionMagneto-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 channels across the entire width of the ring, and inject large amounts of flux into the central hole. By measuring the injected flux and the corresponding reduction of current, which is typically 15%, we estimate the maximum temperature in the channel to be 100 K, and the duration of the process to be on the order of a microsecond. Flux creep simulations reproduce all the observed features in the current density before and after injection events.
dc.description8 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0705.0997
dc.identifierhttp://arxiv.org/abs/0705.0997
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/128556
dc.subjectSuperconductivity
dc.titleAvalanches Injecting Flux into the Central Hole of a Superconducting MgB2 Ring
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