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Título:
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Giant magnetoresistance in ferromagnet/superconductor superlattices
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Autores:
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Peña, V. ;
Sefrioui, Zouhair ;
Arias Serna, Diego ;
León Yebra, Carlos ;
Santamaría Sánchez-Barriga, Jacobo ;
Martínez, J. L. ;
te Velthuis, S. G. E. ;
Hoffmann, A.
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 2005-02-11
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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: Electricidad
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Materia = Ciencias: Física: Electrónica
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Tipo = Artículo
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Resumen:
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We show magnetoresistance in excess of 1000% in trilayers containing highly spin-polarized La_(0.7)Ca_(0.3)MnO_(3) and high-T_(c) superconducting YBa_(2)Cu_(3)O_(7). This large magnetoresistance is reminiscent of the giant magnetoresistance (GMR) in metallic superlattices but with much larger values, and originates at spin imbalance due to the injection of spin-polarized carriers. Furthermore, in contrast to ordinary GMR, the magnetoresistance is intimately related to the superconductivity in the YBa_(2)Cu_(3)O_(7) layer and vanishes in the normal state. This result, aside from its fundamental importance, may be of interest for the design of novel spintronic devices based on ferromagnet/superconductor structures.
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En línea:
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https://eprints.ucm.es/id/eprint/30634/1/LeonC68libre.pdf
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