Figure 3
From: Scaling up electrically synchronized spin torque oscillator networks
(a) Histograms of the envelope of the RF voltage obtained with an array of the several STOs. Dependences of (b) emission power and (c) spectral linewidth of the STO array on number of oscillators N. The results were calculated from the power spectrum of the RF voltages. The dotted red lines in (b,c) represent NP0 and Δf0/N, here P0 and Δf0 are averaged emission power and linewidth of eight single oscillators measured without coupling, respectively.
