1. Double percolation effects and fractal behavior in magnetic/superconducting hybrids.
- Author
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Ruiz-Valdepeñas, L, Vélez, M, Valdés-Bango, F, Álvarez-Prado, L M, Martín, J I, Navarro, E, Alameda, J M, and Vicent, J L
- Subjects
MAGNETIC anisotropy ,MAGNETIC properties ,FERROMAGNETIC materials ,MAGNETIC domain ,SUPERCONDUCTIVITY ,FRACTAL dimensions ,NUCLEATION - Abstract
Perpendicular magnetic anisotropy ferromagnetic/superconducting (FM/SC) bilayers with a labyrinth domain structure are used to study nucleation of superconductivity on a fractal network, tunable through magnetic history. As clusters of reversed domains appear in the FM layer, the SC film shows a percolative behavior that depends on two independent processes: the arrangement of initial reversed domains and the fractal geometry of expanding clusters. For a full labyrinth structure, the behavior of the upper critical field is typical of confined superconductivity on a fractal network. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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