Optical Tamm states in one-dimensional superconducting photonic crystal

In this study, we investigate localized and resonant optical waves associated with a semi-infinite superlattice made out of superconductor-dielectric bilayers and terminated with a cap layer. Both transverse electric and transverse magnetic waves are considered. These surface modes are analogous to...

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Bibliographic Details
Published in:Physics of plasmas 2016-08, Vol.23 (8)
Main Authors: El Abouti, O., El Boudouti, E. H., El Hassouani, Y., Noual, A., Djafari-Rouhani, B.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Crystal structure
CRYSTALS
DIELECTRIC MATERIALS
Electron states
LAYERS
ONE-DIMENSIONAL CALCULATIONS
Photonic crystals
Plasma physics
POLARIZATION
SENSORS
SUPERCONDUCTORS
SUPERLATTICES
Surface layers
SURFACES
THICKNESS
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Summary:In this study, we investigate localized and resonant optical waves associated with a semi-infinite superlattice made out of superconductor-dielectric bilayers and terminated with a cap layer. Both transverse electric and transverse magnetic waves are considered. These surface modes are analogous to the so-called Tamm states associated with electronic states found at the surface of materials. The surface guided modes induced by the cap layer strongly depend on whether the superlattice ends with a superconductor or a dielectric layer, the thickness of the surface layer, the temperature of the superconductor layer as well as on the polarization of the waves. Different kinds of surface modes are found and their properties examined. These structures can be used to realize the highly sensitive photonic crystal sensors.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4960983