The authors 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. They 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 vortexlike structure.
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Nonlinear Physics Center, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australian Capital Territory 0200, Australia;
