English
Ciência-IUL
Publicações
Descrição Detalhada da Publicação
Título Revista
Physical Review A - Atomic, Molecular, and Optical Physics
Ano (publicação definitiva)
2015
Língua
Inglês
País
Estados Unidos da América
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Abstract/Resumo
We study the propagation of electromagnetic waves in layered photonic crystals formed by materials with a spontaneous nonreciprocal response, such as Tellegen (axion) media or topological insulators. Surprisingly, it is proven that stratified Tellegen photonic crystals that break simultaneously the space inversion and time-reversal symmetries have always symmetric dispersion diagrams. Interestingly, we show that by combining chiral and nonreciprocal materials the photonic band diagrams can exhibit a spectral asymmetry such that omega(k) not equal omega(-k). Furthermore, it is demonstrated that in some conditions two juxtaposed Tellegen medium layers have an electromagnetic response analogous to that of a biased ferrite slab.
Agradecimentos/Acknowledgements
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Palavras-chave
Classificação Fields of Science and Technology
- Ciências Físicas - Ciências Naturais
Registos de financiamentos
| Referência de financiamento | Entidade Financiadora |
|---|---|
| UID/EEA/50008/2013 | Fundação para a Ciência e a Tecnologia |
