Unconventional Vortex Dynamics in Mesoscopic Superconducting Corbino Disks
arXiv:0907.4708 · doi:10.1103/PhysRevLett.102.197003
Abstract
The discrete shell structure of vortex matter strongly influences the flux dynamics in mesoscopic superconducting Corbino disks. While the dynamical behavior is well understood in large and in very small disks, in the intermediate-size regime it occurs to be much more complex and unusual, due to (in)commensurability between the vortex shells. We demonstrate unconventional vortex dynamics (inversion of shell velocities with respect to the gradient driving force) and angular melting (propagating from the boundary where the shear stress is minimum, towards the center) in mesoscopic Corbino disks.
4 pages, 3 figures
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- Shear Banding and Spatiotemporal Oscillations in Vortex Matter in Nanostructured Superconductors
- Anti-Poiseuille Flow: Increased Vortex Velocity at Superconductor Edges
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