Journal
OPTICS COMMUNICATIONS
Volume 278, Issue 1, Pages 194-198Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2007.05.063
Keywords
tamin states; photonic crystals; metamaterials
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We present a theoretical study of electromagnetic surface waves localized at an interface separating a conventional uniform medium and a semi-infinite one-dimensional photonic crystal made of alternate left-handed metamaterial and right-handed material, which we refer to as left-handed photonic crystal. We find unusual type of surface mode's structure, the so-called surface Tamm states and demonstrate that the presence of metamaterial in the photonic crystal structure 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. (c) 2007 Elsevier B.V. All rights reserved.
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