Fig. 4: Direct measurement of the scale-tailored localized states.
From: Scale-tailored localization and its observation in non-Hermitian electrical circuits
a An input AC current is fed at the far right end of the circuit using an AC voltage source connected through a shunt resistance Rs = 10 kΩ. b Voltage response at all nodes relative to the current feed. The inset displays the localization length ξ extracted from the voltage responses. Experimental data are marked by colored symbols for different configurations: (N, l) = (20, 6) (red diamonds) with (R0, f) = (82 kΩ, 174 kHz), (20, 11) (blue triangles) with (R0, f) = (22 kΩ, 175 kHz), (20, 16) (green crosses) with (R0, f) = (16 kΩ, 176.5 kHz), which align with theoretical expectation (black lines). Other parameters are: C0 = 10pF, C1 = 220pF C2 = 30pF, C3 = 200pF, Cr= 1.5 nF, L = 470 μ H.
