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Título:
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Imprinted labyrinths and percolation in Nd-Co/Nb magnetic/superconducting hybrids
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Autores:
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Ruiz-Valdepeñas Martín de Almagro, Luis ;
Vélez, M. ;
Valdés Bango, F. ;
Álvarez Prado, L.M. ;
García Alonso, F.J. ;
Martín, J.I. ;
Navarro Palma, Elena ;
Alameda, J.M. ;
Vicent López, José Luis
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Tipo de documento:
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texto impreso
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Editorial:
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American Institute of Physics, 2014-06-07
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Materia = Ciencias: Física: Física del estado sólido
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Tipo = Artículo
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Resumen:
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Magnetization reversal processes have been studied in hybrid magnetic/superconducting Nd-Co/Nb bilayers by the comparison of out-of-plane magnetic hysteresis loops and superconducting phase diagrams as a function of magnetic layer thickness and of disorder in the magnetic layer induced by a nanostructured copolymer template. A good correlation is found between the regimes corresponding to percolation effects in the superconductor and to the transition from extended to confined superconductivity with the characteristic fields for reverse domain nucleation and fast domain expansion in the magnetic layer, indicating that superconductivity nucleates on the disordered network imprinted on the superconducting layer by the labyrinth domain structure of the magnetic layer. As disorder increases in the magnetic layer, percolation effects disappear from the superconducting transitions in agreement with a more homogeneous magnetization reversal process.
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En línea:
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https://eprints.ucm.es/id/eprint/29705/1/Art.%20131.pdf
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