Fig. 5
The response amplitude Q varies with the frequency \({\varOmega _{\textrm{H}}}\) of the high-frequency signal. The inset shows the phase diagram of \({U_2} - {U_1}\), from bottom to top, \(\Omega = 3075 \,\textrm{Hz}\), \(3325 \,\textrm{Hz}\). Other parameters: \(A = 0.7 \,\textrm{V}\), \({\omega _{\textrm{L}}} = 50.0 \,\textrm{Hz}\), \(B = 4.0 \,\textrm{V}\). Symbols mean the same as in Fig. 3.
