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Título:
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Emergent spin filter at the interface between ferromagnetic and insulating layered oxides
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Autores:
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Liu, Yaohua ;
Cuéllar Jiménez, Fabián Andrés ;
Sefrioui, Zouhair ;
Freeland, J. W. ;
Fitzsimmons, M. R. ;
León Yebra, Carlos ;
Santamaría Sánchez-Barriga, Jacobo ;
te Velthuis, S. G. E.
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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, 2013-12-11
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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 report a strong effect of interface-induced magnetization on the transport properties of magnetic tunnel junctions consisting of ferromagnetic manganite La_(0.7)Ca_(0.3)MnO_(3) and insulating cuprate PrBa_(2)Cu_(3)O_(7). Contrary to the typically observed steady increase of the tunnel magnetoresistance with decreasing temperature, this system exhibits a sudden anomalous decrease at low temperatures. Interestingly, this anomalous behavior can be attributed to the competition between the positive spin polarization of the manganite contacts and the negative spin-filter effect from the interface-induced Cu magnetization.
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En línea:
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https://eprints.ucm.es/id/eprint/31297/1/LeonC138libre.pdf
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