Fig. 5: Simulation results of the topolectrical circuit.
From: Gauge-dependent topology in non-reciprocal hopping systems with pseudo-Hermitian symmetry
a–d Show the results for phase I with electronic components L = 5.6 μH, CA = 100 pF, CB = 150 pF, Cm = 160 pF, Ct = Cγ = 50 pF, and (e–h) show the results for phase IV with components L = 5.6 μH, CA = 210 pF, CB = 260 pF, Cm = Ct = Cγ = 50 pF. a, e Frequency response of the topolectrical circuit lattice under periodical boundary condition, where the ideal model results and simulation results are colored by light red and gray respectively. b, f Exceptional rings stimulated by the on-site frequency \({f}_{0}=1/(2\pi \sqrt{({C}_{b}+{C}_{m}+4{C}_{t})L})\). c, g Frequency response of the topolectrical circuit under open boundary condition. d, h The amplitude of the localized topological boundary modes stimulated by the on-site frequency.
