Abstract
We visualized the flux distribution of a ${\mathrm{Bi}}_{2}{\mathrm{Sr}}_{2}{\mathrm{CaCu}}_{2}{\mathrm{O}}_{8+\ensuremath{\delta}}$ single crystal in transversal geometry by using low temperature magnetic force microscopy in the dynamic mode. With increasing external magnetic field, the magnetic flux density exhibited a distribution, which generally followed the Bean model. When the propagating flux front passed through the imaging area, we could observe a shift of the magnetic force microscopy signal toward an unexpected direction. The origin of this shift was studied by considering very long-range magnetic force due to the specific flux and current distribution near the propagating flux front.
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