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| Título: | Large magnetoresistance in Fe/MgO/FeCo(001) epitaxial tunnel junctions on GaAs(001) |
Autor: | Bowen, M.; Cros, Vicent; Petroff, F.; Fert, A.; Martínez Boubeta, Carlos CSIC ORCID; Costa Krämer, José Luis CSIC ORCID ; Anguita, José Virgilio CSIC; Cebollada, Alfonso CSIC ORCID; Briones Fernández-Pola, Fernando CSIC; Teresa, José María de CSIC ORCID ; Morellón, L.; Ibarra, M. R.; Güell, F.; Peiró, F.; Cornet, Albert CSIC | Palabras clave: | Iron Magnesium compounds Iron alloys Cobalt alloys Magnetic epitaxial layers Magnetic multilayers Giant magnetoresistance Tunnelling |
Fecha de publicación: | 10-sep-2001 | Editor: | American Institute of Physics | Citación: | Applied Physics Letters 79, 1655 (2001) | Resumen: | We present tunneling experiments on Fe(001)/MgO(20 Å)/FeCo(001) single-crystal epitaxial junctions of high quality grown by sputtering and laser ablation. Tunnel magnetoresistance measurements give 60% at 30 K, to be compared with 13% obtained recently on (001)-oriented Fe/amorphous-Al2O3/FeCo tunnel junctions. This difference demonstrates that the spin polarization of tunneling electrons is not directly related to the density of states of the free metal surface—Fe(001) in this case—but depends on the actual electronic structure of the entire electrode/barrier system. | Versión del editor: | http://dx.doi.org/10.1063/1.1404125 | URI: | http://hdl.handle.net/10261/25685 | DOI: | 10.1063/1.1404125 | ISSN: | 0003-6951 |
| Aparece en las colecciones: | (IMN-CNM) Artículos |
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| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| Bowen, M. et al Appl. Phys. Lett._79_2001.pdf | 144,37 kB | Adobe PDF |  Visualizar/Abrir |
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