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Electronic and magnetic properties of α-FeGe₂ films embedded in vertical spin valve devices

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Czubak, Dietmar ; Gaucher, Samuel ; Oppermann, Lars ; Herfort, Jens ; Zollner, Klaus ; Fabian, Jaroslav ; Grahn, Holger T. ; Ramsteiner, Manfred
Date of publication of this fulltext: 03 Dec 2020 06:14


We studied metastable alpha-FeGe2, a layered tetragonal material, embedded as a spacer layer in spin valve structures with ferromagnetic Fe3Si and Co2FeSi electrodes. For both types of electrodes, spin valve operation is demonstrated with A metallic transport behavior of the alpha-FeGe2 spacer layer. The spin valve signals are found to increase with both temperature and spacer thickness, which is ...


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