Observation of Splintered Josephson Vortices at Grain Boundaries in YBa2Cu3O7
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چکیده
067004-1 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.
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تاریخ انتشار 2002