Journal of NanophotonicsEvolution of surface-plasmon-polariton and Dyakonov–Tamm waves with the ambichirality of a partnering dielectric material
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The planar interface of an isotropic homogeneous metal and an ambichiral dielectric material can guide surface-plasmon-polariton (SPP) waves. The planar interface of an isotropic, homogeneous dielectric material and an ambichiral dielectric material can guide Dyakonov–Tamm waves. In either instance, we found that, as the ambichiral partnering material evolves into a finely chiral material, the solutions of the dispersion equation for surface-wave propagation evince convergence. The convergence is faster for Dyakonov–Tamm waves than for SPP waves.