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http://hdl.handle.net/10071/10681
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Title: Asymmetric band diagrams in photonic crystals with a spontaneous nonreciprocal response
Authors: Prudêncio, F.
Matos, S.
Paiva, C.
Issue Date: 2015
Publisher: American Physical Society
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 ?(k)??(-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.
Description: WOS:000356404600005
Peer reviewed: yes
URI: http://hdl.handle.net/10071/10681
https://ciencia.iscte-iul.pt/id/ci-pub-24883
DOI: 10.1103/PhysRevA.91.063821
ISSN: 1050-2947
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica

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