Non-radiative surface plasma-polariton modes of inhomogeneous metal circular cylinders
- 1 January 1980
- journal article
- Published by IOP Publishing in Journal of Physics F: Metal Physics
- Vol. 10 (1) , 53-65
- https://doi.org/10.1088/0305-4608/10/1/014
Abstract
The theory is given of the non-radiative surface plasmon-polariton modes of metal cylinders, modelled by a spatially dispersive free electron gas within a Bloch hydrodynamic formulation. Dispersion equations for homogeneous and inhomogeneous cylinders are derived for nth cylindrical harmonic, and the dispersion properties are investigated as a function of n, cylindrical radius and surface structure. The position, and splitting with n, of the surface modes is found to be considerably different from those based on a model that neglects spatial dispersion. This is particularly true for very small cylinder radii.Keywords
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