Dendritic flux avalanches in superconductors

https://www.mn.uio.no/fysikk/english/research/groups/amks/superconductivity/dend/
http://www.thunderbolts.info/forum/phpBB3/viewtopic.php?p=4785#p4785

Found this article to be fascinating coverage. Well worth the read. It covers the charge field for superconductors (classic) in some detail with good photographs.
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When a superconducting film is placed in a perpendicular magnetic field, the flux penetration sometimes occurs via abrupt avalanches that result in remarkable dendritic flux patterns that can be observed using magneto-optical imaging


https://www.mn.uio.no/fysikk/english/research/groups/amks/superconductivity/dend/dend.avi

Gallery of Abrikosov Lattices in Superconductors
https://www.mn.uio.no/fysikk/english/research/groups/amks/superconductivity/vortex/index.html

Bitter Decoration
MgB2 crystal, 200G

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Flux and temperature distribution produced by vortex dynamics simulations
White dots: individual vortices;
Red: regions of enhanced temperature due to vortex motion
Green: traces of recently moving vortices