Fig. 5: Topological transitions and edge modes in dimerized orbital SSH model.
From: Orbital topological edge states and phase transitions in one-dimensional acoustic resonator chains

a Top: Sketch of the orbital SSH model with dimerized coupling tubes. Bottom: Energy spectra for orbital SSH models and conventional SSH models by varying d2 from 0.1 cm to 0.4 cm. b Experimental sample with auxiliary coupling tubes. c Measured pressure amplitude fields for the L_px and L_py excitations. Source data are provided as a Source Data file.