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Título:
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Origin of the inverse spin-switch behavior in manganite/cuprate/manganite trilayers
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Autores:
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Nemes, Norbert Marcel ;
Gárcia Hernández, M. ;
te Velthuis, S. G. E. ;
Hoffmann, A. ;
Visani, C. ;
Garcia Barriocanal, Javier ;
Peña, V. ;
Arias Serna, Diego ;
Sefrioui, Zouhair ;
León Yebra, Carlos ;
Santamaría Sánchez-Barriga, Jacobo
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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, 2008-09
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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 studied ferromagnet/superconductor/ferromagnet trilayers based on La_(0.7)Ca_(0.3)MnO_(3) manganite and YBa_(2)Cu_(3)O_(7??) (YBCO) high-T_(c) cuprate with magnetoresistance and magnetization measurements. We find an inverse superconducting spin-switch behavior, where superconductivity is favored for parallel alignment of the magnetization in the ferromagnetic layers. We argue that this inverse superconducting spin switch originates from the transmission of spin-polarized carriers into the superconductor. In this picture, the thickness dependence of the magnetoresistance yields the spin-diffusion length in YBCO as 13 nm. A comparison of bilayers and trilayers allows ruling out the effect of the stray fields of the domain structure of the ferromagnet as the source of the inverse superconducting spin switch.
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En línea:
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https://eprints.ucm.es/id/eprint/30493/1/LeonC37libre.pdf
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