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Dynamics of vortex fronts in type II superconductors

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Figure

Figure 1.1: Examples of vortex patterns in type II superconductors. a) On the left dendritic patterns of vortices with branchlike structures in a Nb film of 0.5 μm
Figure 1.2: Images of flux penetration (bright areas) into a superconducting state (dark areas) at 5 K in a MgB 2 film of 0.4 μm
Figure 1.3: Mean-field phase diagram for a type II superconductor. Below the critical field H c1 (T ), the material in the Meissner-Ochsenfeld phase an external magnetic field is totally expelled
Figure 1.4: Schematic representation of the origin of the Lorentz force acting on a vortex, due to the coupling between the local magnetic field h and a macroscopic current J due to a gradient in the density of vortices.
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