Research Article

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

Figure 3

(a) Arnold tongue computed for 𝐻 D C = 2 5 0  mT and 𝐽 = 5 × 1 0 7  A/cm2 varying the magnitude of RF current and field. (b) Phase difference between external force (current or field) and output magnetization as a function of dc current when an RF source at the same frequency of the free precessional one is applied.Filled-red circle: RF current, white circle: RF field.
951976.fig.003a
(a)
951976.fig.003b
(b)