On ultrafast magnetic flux dendrite propagation into thin superconducting films
arXiv:cond-mat/0410030 · doi:10.1103/PhysRevB.72.024532
Abstract
We suggest a new theoretical approach describing the velocity of magnetic flux dendrite penetration into thin superconducting films. The key assumptions for this approach are based upon experimental observations. We treat a dendrite tip motion as a propagating flux jump instability. Two different regimes of dendrite propagation are found. A fast initial stage is followed by a slow stage, which sets in as soon as a dendrite enters into the vortex-free region. We find that the dendrite velocity is inversely proportional to the sample thickness. The theoretical results and experimental data obtained by a magneto-optic pump-probe technique are compared and excellent agreement between the calculations and measurements is found.
arXiv comment4 pages, 4 figures
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Cited by in corpus (7)
- Dendritic and uniform flux jumps in superconducting films
- Onset of dendritic flux avalanches in superconducting films
- Nucleation and propagation of thermomagnetic avalanches in thin-film superconductors
- Collapse of the critical state in superconducting niobium
- Evidence of rf-driven branching of dendritic vortex avalanches in MgB2 microwave resonators
- Time dependent London approach, dissipation due to out-of-core normal excitations by moving vortices
- Elastic fields in superconductors caused by moving vortices