Figure 9.

Spectra of the modulation frequencies $\nu$ (normalised to ${\tau }_{GL}^{-1}$) of the temporal voltage signals shown in Figure 8. (A) 0.348$J_{DP}$, (B) 0.366$J_{DP}$, (C) 0.387$J_{DP}$, (D) 0.406$J_{DP}$, (E) 0.444$J_{DP}$, and (F) 0.655$J_{DP}$.