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Department of Physics

Staff profile

Publication details for Prof Richard Abram

Shelykh, I A, Kaliteevskii, M, Kavokin, A V, Brand, S, Abram, R A, Chamberlain, J M & Malpuech, G (2007). Interface photonic states at the boundary between a metal and a dielectric Bragg mirror. Physica Status Solidi A - Applications and Materials Science 204(2): 522-525.

Author(s) from Durham

Abstract

Tamm states of light are localized interface modes inside the light-cone. In contrast to the surface modes they can have a zero in-plane wave-vector. We show that they can be formed in both TE and TM polarizations at the boundary between the isotropic media with a negative dielectric constant (e.g. a metal below the plasmon resonance) and a periodical dielectric Bragg structure. It is shown that the order of layers in Bragg structure is crucial for the appearance of the Tamm states. The in-plane dispersion of the interface states is parabolic with effective masses slightly different for TE and TM polarizations, both of the order of 10–5 of the free electron mass.