Advances in Condensed Matter Physics / 2012 / Article / Fig 2

Research Article

Micromagnetic Study of Synchronization of Nonlinear Spin-Torque Oscillators to Microwave Current and Field

Figure 2

Response of the STO self-oscillation for 𝐻 D C = 2 5 0  mT and 𝐽 D C = 5 × 1 0 7  A/cm2 as a function of the microwave source frequency when (a) 𝐽 R F = 2 × 1 0 7  A/cm2, (b) 𝐻 R F = 1  mT, and (c) RF current 𝐽 R F = 1 × 1 0 7  A/cm2 and RF field 𝐻 R F = 1  mT are applied together at the same frequency. The locking regions for the frequency ratio of 1 : 1 and 2 : 1 are also visible.
951976.fig.002a
(a)
951976.fig.002b
(b)
951976.fig.002c
(c)

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