Fig. 6: Excitation of linear and non-linear states at dimerization parameter γ = 1.6. | Communications Physics

Fig. 6: Excitation of linear and non-linear states at dimerization parameter γ = 1.6.

From: Observation of nonlinear higher-order topological insulators with unconventional boundary truncations

Fig. 6: Excitation of linear and non-linear states at dimerization parameter γ = 1.6.The alternative text for this image may have been generated using AI.

The arrangement and meaning of the panels are as in Fig. 5. a, e Single-site excitation of the waveguide in the lower corner waveguide; b, f single-site excitation of the seventh waveguide from the upper left corner at the left edge; c, g single-site excitation of the ninth waveguide at the upper edge (overlapping with the edge mode with index n = 75 in the whole unit cell); d, h phase-shifted excitation of two lower waveguides overlapping with the phase-shifted corner mode with n = 121.

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