Reduction of the Spin-Torque Critical Current by Partially Canceling the Free Layer Demagnetization Field
نویسندگان
چکیده
We significantly reduce the critical current Ic0 for the onset of spin torque switching of the free layer in nanometer-scale in-plane magnetized spin valves by partially canceling its demagnetization field (Hd) through the utilization of Co/Ni multilayer free layers. A zero-thermal-fluctuation critical current density Jc0 ~ 2 × 106 A/cm2 is determined through both current ramp rate and nanosecond pulse measurements, and comparisons with high Hd control samples confirm that this strategy is efficient in substantially decreasing Ic0.
منابع مشابه
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