Collapse of the critical state in superconducting niobium

Online video supplement for Phys. Rev. B 74, 220511(R) (2006)
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first published online at: http://www.arxiv.org/abs/cond-mat/0607244

Video in QuickTime is available from the APS EPAPS servers here: ftp://ftp.aip.org/epaps/phys_rev_b/E-PRBMDO-74-R10646/

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Penetration after zero-field cooling in a 10 um Nb strip. T=3.8 K.
(video for Fig.2 of the paper)

Reduction of the magnetic field to zero after complete flux penetration has been achieved.
(video for Fig. 3 of the paper)

Penetration of antiflux into 10 um Nb strip.
(video for Fig. 5 of the paper)

Penetration of the antiflux into a long 25 um strip.