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(Color online) (a) SEM micrograph of one of the measured samples. (b) A schematic diagram of the experiment. Voltage on detector electrode is measured by the lock-in amplifier. and are injectors connected to the oscillator output. Magnetic field is parallel to the long dimension of the ferromagnetic electrodes.
(Color online) Spin valve signal at as a function of applied magnetic field for different values of . , (black), (red), (green), (blue), (cyan), and (magenta). Magnetic field is swept (a) from left to right and (b) from right to left. Sketches show the relative orientations of magnetization in the three ferromagnetic electrodes at various values of magnetic field.
Spin valve signal at as a function of applied magnetic field. The solid and dotted curves correspond to opposite directions of the field sweep. (a) Voltage on electrode due to current . (b) Voltage on electrode due to current .
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