We report an unconventional oscillatory tunnel magnetoresistance as a function of the applied bias in double barrier magnetic tunnel junctions that were made of two Al2O3barriers sandwiched by three ferromagnetic layers. When the center ferromagnetic layer is aligned antiparallel to the top and bottom magnetic layers, a distinct magnetoresistance oscillation appears with respect to the increase of the bias voltage at 4.2 K and at room temperature. The period of the oscillation is about 1.6 mV.
|Physical Review B - Condensed Matter and Materials Physics
|Published - 2005
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics