Dendritic Flux Avalanches and Nonlocal Electrodynamics in Thin Superconducting Films
Igor S. Aranson, Alex Gurevich, Marco S. Welling, Rinke J. Wijngaarden, Vitalii K. Vlasko-Vlasov, Valerii M. Vinokur, Ulrich Welp
DOI 10.1103/PhysRevLett.94.037002 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We report a mechanism of nonisothermal dendritic flux penetration in superconducting films. Our numerical and analytical analysis of coupled nonlinear Maxwell and thermal diffusion equations shows that dendritic flux pattern formation results from spontaneous branching of propagating flux filaments due to nonlocal magnetic flux diffusion and positive feedback between flux motion and Joule heating. The branching is triggered by a thermomagnetic edge instability, which causes stratification of the critical state. The resulting distribution of thermomagnetic microavalanches is not universal, because it depends on a spatial distribution of defects. Our results are in good agreement with experiments on Nb films.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nb3Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Decoupling and depinning of flux lattices in disordered layered superconductors
similarity 0.98Baruch Horovitz
Source status unknown — claims are unverified
Fluctuations of vortices in layered high-Tc superconductors
similarity 0.97L. N. Bulaevskii et al.
Source status unknown — claims are unverified
Structure of Flux Lines in Three-Dimensional Layered Type-II Superconductor: Numerical Experiments
similarity 0.97Masahiko Machida & Hideo Kaburaki
Source status unknown — claims are unverified
Topological phase fluctuations, amplitude fluctuations, and criticality in extreme type-II superconductors
similarity 0.97A. K. Nguyen & A. Sudbø
Source status unknown — claims are unverified
Nodal Quasiparticles and Classical Phase Fluctuations in d-Wave Superconductors
similarity 0.97K. V. Samokhin & B. Mitrović
Source status unknown — claims are unverified
Spin-fluctuation effects on superconductivity
similarity 0.97P. J. Williams & J. P. Carbotte
Source status unknown — claims are unverified