Observation of splintered Josephson vortices at grain boundaries in YBa2Cu3O7−δ

R.G. Mints, I. Papiashvili, J.R. Kirtley, H. Hilgenkamp, G. Hammerl, J. Mannhart

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We have directly observed well-separated Josephson vortex splinters with unquantized magnetic flux at asymmetric 45° grain boundaries in YBa2Cu3O7-¿ films by imaging magnetic flux with scanning SQUID microscopy. The existence of these splinter vortices has been predicted and is well described by a model based on dx2-y2 pairing symmetry and facetting of the grain boundary on a length scale shorter than the Josephson penetration depth.
Original languageEnglish
Article number067004
Number of pages4
JournalPhysical review letters
Issue number6
Publication statusPublished - 2002


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