Imaging the dynamics of single vortices on grain boundaries in YBa2Cu3O6+x thin films (original) (raw)

2008

Abstract

We use a scanning Hall probe microscope with single vortex resolution to study the dynamics of single vortices on grain boundaries in YBa2Cu3O6+x thin films with 10 kHz bandwidth. In the presence of an applied current, we observe individual vortices hopping between pinning sites. Detecting the motion of individual vortices allows us to probe the very- low-voltage regime of the current -voltage (I-V) characteristic, at voltage levels of 2.10-15 V. By scanning the grain boundary we show local I-V curves and investigate the statistical processes at the onset of vortex motion.

S. Wenderich hasn't uploaded this paper.

Let S. know you want this paper to be uploaded.

Ask for this paper to be uploaded.