Spin manipulation in Co-doped ZnO |
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Authors: | Xu Qingyu Hartmann Lars Zhou Shengqiang Mcklich Arndt Helm Manfred Biehne Gisela Hochmuth Holger Lorenz Michael Grundmann Marius Schmidt Heidemarie |
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Affiliation: | Institut für Ionenstrahlphysik und Materialforschung, Forschungszentrum Dresden-Rossendorf e.V., Bautzner Landstrasse 128, 01328 Dresden, Germany. xuqingyu_1974@yahoo.com |
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Abstract: | We report the clearly observed tunneling magnetoresistance at 5 K in magnetic tunnel junctions with Co-doped ZnO as a bottom ferromagnetic electrode and Co as a top ferromagnetic electrode prepared by pulsed laser deposition. Spin-polarized electrons were injected from Co-doped ZnO to the crystallized Al2O3 and tunnelled through the amorphous Al2O3 barrier. Our studies demonstrate the spin polarization in Co-doped ZnO and its possible application in future ZnO-based spintronics devices. |
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