Reflection-Free One-Way Edge Modes in a Gyromagnetic Photonic Crystal

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dc.creatorWang, Zheng
dc.creatorChong, Y. D.
dc.creatorJoannopoulos, John D.
dc.creatorSoljacic, Marin
dc.date2007-12-11
dc.date2008-01-10
dc.date.accessioned2026-07-07T08:53:25Z
dc.date.available2026-07-07T08:53:25Z
dc.descriptionWe point out that electromagnetic one-way edge modes analogous to quantum Hall edge states, originally predicted by Raghu and Haldane in 2D gyroelectric photonic crystals possessing Dirac point-derived bandgaps, can appear in more general settings. In particular, we show that the TM modes in a gyromagnetic photonic crystal can be formally mapped to electronic wavefunctions in a periodic electromagnetic field, so that the only requirement for the existence of one-way edge modes is that the Chern number for all bands below a gap is non-zero. In a square-lattice gyromagnetic Yttrium-Iron-Garnet photonic crystal operating at microwave frequencies, which lacks Dirac points, time-reversal breaking is strong enough that the effect should be easily observable. For realistic material parameters, the edge modes occupy a 10% band gap. Numerical simulations of a one-way waveguide incorporating this crystal show 100% transmission across strong defects, such as perfect conductors several lattice constants wide, larger than the width of the waveguide.
dc.description4 pages, 3 figures (Figs. 1 and 2 revised.)
dc.identifierhttps://arxiv.org/abs/0712.1776
dc.identifierhttp://arxiv.org/abs/0712.1776
dc.identifierPhys. Rev. Lett. 100, 013905 (2008)
dc.identifierdoi:10.1103/PhysRevLett.100.013905
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145615
dc.subjectOptics
dc.subjectMesoscale and Nanoscale Physics
dc.titleReflection-Free One-Way Edge Modes in a Gyromagnetic Photonic Crystal
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