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Dependence of the average and distribution of (a) the switching current and (b) the switching magnetic field on and the ramp time.
(a) Resistance vs magnetic field curves measured 50 times repeatedly. Inset is a SEM image of patterned resist. (b) Resistance vs current curves under various magnetic fields. Clear spin transfer switching was shifted by the magnetic field.
Dependence of (a) the cumulative distribution of parallel-to-antiparallel switching current, (b) , and (c) (square) and (circle) on the ramp period. (d) Bias dependence of the TMR ratio.
Magnetic phase diagram of the spin transfer switching in a MTJ with . can be determined with the diagram even if .
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