Magnetic tunnel junctions were prepared with the Heusler compounds Co 2 FeAl, Co 2 FeSi, and Co 2 MnSi as the soft magnetic electrode. The Co 2 MnSi electrodes had a multilayer design that used either the Co 2 FeAl or the Co 2 FeSi compound as a buffer material. Pinned Co-Fe was used as the hard reference electrode. The electronic transport characteristics were analyzed by tunneling spectroscopy. The dependence of sample properties on the buffer material was of interest, especially the gap in the minority density of states of the Heusler electrode. The temperature dependence of the transport properties was also investigated.
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Magnon excitation and temperature dependent transport properties in magnetic tunnel junctions with Heusler compound electrodes
Drewello, Volker; Ebke, Daniel; Schäfers, Markus; Kugler, Zoë; Reiss, Günter; Thomas, Andy
Follow Journal of Applied Physics
, Volume 111 (7)
American Institute of Physics – Apr 1, 2012
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