Vortex Avalanches and Magnetic Flux Fragmentation in Superconductors
Journal Article
·
· Physical Review Letters
We report the results of numerical simulations of nonisothermal dendritic flux penetration in type-II superconductors. We propose a generic mechanism of dynamic branching of a propagating hot spot of a flux flow/normal state triggered by a local heat pulse. The branching occurs when the flux hot spot reflects from inhomogeneities or the boundary on which magnetization currents either vanish, or change direction. The hot spot then undergoes a cascade of successive splittings, giving rise to a dissipative dendritic-type flux structure. This dynamic state eventually cools down, turning into a frozen multifilamentary pattern of magnetization currents.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 40277372
- Journal Information:
- Physical Review Letters, Vol. 87, Issue 6; Other Information: DOI: 10.1103/PhysRevLett.87.067003; Othernumber: PRLTAO000087000006067003000001; 002133PRL; PBD: 6 Aug 2001; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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