Mode structure and polaritonic contributions to the Casimir effect in a magnetodielectric cavity
| Autor: | Francesco Intravaia, Harald R. Haakh |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Permittivity
Physics Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Surface plasmon Institut für Physik und Astronomie FOS: Physical sciences Physics::Optics Metamaterial Atomic and Molecular Physics and Optics Casimir effect Dispersion relation Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Polariton Quasiparticle Quantum Physics (quant-ph) Cavity wall |
| Zdroj: | Physical Review A. 88 |
| ISSN: | 1094-1622 1050-2947 |
| DOI: | 10.1103/physreva.88.052503 |
| Popis: | We present a full analysis of the mode spectrum in a cavity formed by two parallel plates, one of which is a magneto-dielectric, e.g. a metamaterial, while the other one is metallic, and obtain dispersion relations in closed form. The optical properties of the cavity walls are described in terms of realistic models for the effective permittivity and the permeability. Surface polaritons, i.e. electromagnetic modes that have at least partly an evanescent character, are shown to dominate the Casimir interaction at small separations. We analyze in detail the s-polarized polaritons, which are a characteristic feature of a magneto-dielectric configuration, and discuss their role in the repulsive Casimir force. Comment: 14 pages, 8 figures |
| Databáze: | OpenAIRE |
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