Please use this identifier to cite or link to this item: http://hdl.handle.net/10071/10681
Author(s): Prudêncio, F. R.
Matos, S. A.
Paiva, C. R.
Date: 2015
Title: Asymmetric band diagrams in photonic crystals with a spontaneous nonreciprocal response
Volume: 91
Number: 6
Pages: 063821-1 - 063821-13
ISSN: 1050-2947
DOI (Digital Object Identifier): 10.1103/PhysRevA.91.063821
Abstract: 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.
Peerreviewed: yes
Access type: Open Access
Appears in Collections:IT-RI - Artigos em revistas científicas internacionais com arbitragem científica

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