Reconstruction of the electric field in type-II superconducting thin films in perpendicular geometry
C. Romero-Salazar, Ch. Jooss, O. A. Hernández-Flores
DOI 10.1103/PhysRevB.81.144506 · Physical Review B
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Abstract
The study of electric field distributions induced by flux creep in type-II superconducting films allows for important insight into the mechanism of vortex dynamics, the temporal evolution of flux and current distributions, and the occurrence of local losses. Most studies are based on the assumption that a phenomenological materials law, which has been extracted from macroscopic transport measurements, can be also applied to the local electric field during magnetization decay. We evaluate this ansatz by reconstructing the three-dimensional-induced Ei and potential Ep electric fields from experimentally measured time dependence of the flux density distribution. The results are quantitatively compared with solutions of the nonlinear and nonlocal equation of motion for the flux penetration, where the Maxwell equations as well as a materials law are utilized to obtain a two-dimensional Ei,2D and Ep,2D. We focus our analysis on the electric field distributions on a partially penetrated magnetized state of an epitaxial YBa2Cu3O6.95 film.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6.95 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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