Observation of splintered Josephson vortices at grain boundaries in YBa(2)Cu(3)O(7-delta) |
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| Authors: | Mints R G Papiashvili Ilya Kirtley J R Hilgenkamp H Hammerl G Mannhart J |
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| Institution: | School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Israel. |
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| Abstract: | We have directly observed well-separated Josephson vortex splinters with unquantized magnetic flux at asymmetric 45 degrees grain boundaries in YBa(2)Cu(3)O(7-delta) 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 dx(2)(-y(2)) pairing symmetry and facetting of the grain boundary on a length scale shorter than the Josephson penetration depth. |
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