Figure 6
From: Injection locking of multiple auto-oscillation modes in a tapered nanowire spin Hall oscillator
Auto-oscillation intensity as a function of the injected microwave power in the locked regime for Idc = 2.5 mA. The signal amplitude measured on the position of bullet A for x = 500 nm and and a microwave frequency of 5.2 GHz is shown as red dots. Linear fitting of the data suggests a power law with an exponent of 0.67 (red line). For comparison the recorded BLS intensity without an externally applied signal is shown as a green horizontal line. The signal amplitude subtracted by this base-intensity is additionally shown as red crosses. Blue triangles and black squares give the amplitude of the directly excited magnetization dynamic by the rf current when the SHO is turned off (Idc = 0) for microwave frequencies of 5.2 GHz and 5.6 GHz, respectively.
