2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/113134We study the electromagnetic surface waves localized at an interface separating a one-dimensional photonic crystal and left-handed metamaterial, the so-called surface Tamm states. We demonstrate that the metamaterial allows for a flexible control of the dispersion properties of surface states, and can support the Tamm states with a backward energy flow and a vortex-like structure.3 pages, 5 figuresOpticstext