Fig. 3: Synchronization of two dipolar-coupled oscillators. | Communications Physics

Fig. 3: Synchronization of two dipolar-coupled oscillators.

From: Second harmonic injection locking of coupled spin torque vortex oscillators with an individual phase access

Fig. 3

a Power spectral density (PSD) measured for two spin torque vortex oscillators (STVO1 and STVO2) with an edge-to-edge distance of 100 nm, as a function of the direct current I1 passing through STVO1. The direct current I2 applied to STVO2 is −5.0 mA. b Example of the PSD obtained for I1 = −10.0 mA and I2 = −5.0 mA for single (black and red) and combined (blue) oscillations. c Linewidth, d output power and e frequency calculated as a function of I1 for I2 = 0.0 mA (black) and I2 = −5.0 mA (blue). For an easy comparison, the parameters obtained for an isolated oscillation of STVO2 at I2 = −5.0 mA (red) are also shown without any connection with the I1 axis. A perpendicular magnetic field of 2.8 kOe was applied during the measurements.

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