Negative Group Velocity of Surface Polaritons in Metal Foil Nanostructure
| Authors | Y.M. Aleksandrov , V.V. Yatsishen |
| Affiliations | Volgograd State University, 100, University Ave., 400062 Volgograd, Russia |
| Е-mail | taronte@ya.ru |
| Issue | Volume 9, Year 2017, Number 3 |
| Dates | Received 10 April 2017; revised manuscript received 20 April 2017; published online 30 June 2017 |
| Citation | Y.M. Aleksandrov, V.V. Yatsishen, J. Nano- Electron. Phys. 9 No 3, 03039 (2017) |
| DOI | 10.21272/jnep.9(3).03039 |
| PACS Number(s) | 78.20. – e, 78.20.Bh, 78.66.Bz |
| Keywords | Surface polariton, Genetic Algorithm (5) , Foil structure, Negative refraction, Dispersion (19) . |
| Annotation | The paper discusses the conditions under which the negative refraction in the membrane nanostructure consisting of isotropic films of metal (platinum, silver) on a metallic substrate (aluminum) at optical frequencies (UV) is possible. Using the genetic algorithm, the solution of the dispersion equation in the frequency region close to resonance is obtained. The obtained solutions are compared with solutions for a thin single film on a substrate. Also, comparisons of the obtained solutions for different thicknesses of nanolayers in the structure of two films were made. The effect of the additional layers depending on the change in the dispersion membrane structure is shown. Also, the influence of additional layers on the character of the dependence of the group velocity on the wave vector is shown for the changes of layers thickness in the structure. |
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List of References English version of article |
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