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Edge states protected by chiral symmetry in disordered photonic graphene

2013/04/25 by Julia M. Zeuner, Zeuner, Julia M., Mikael C. Rechtsman +5
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Graphene research and applications #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optics (physics.optics) #Plasmonic and Surface Plasmon Research #Quantum optics and atomic interactions #cond-mat.mes-hall #cond-mat.mtrl-sci #physics.optics

paper · pdf · doi:10.48550/arxiv.1304.6911

arxiv created 2013/04/25 · openalex publication_date 2013/04/25 · arxiv updated 2013/04/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We experimentally investigate the impact of uncorrelated composite and structural disorder in photonic graphene. We find that in case of structural disorder not only chiral symmetry, but also the vanishing of the density of states at zero energy is preserved. This is in contrast to composite disorder, where chiral symmetry as well as the vanishing of the density of states are destroyed. Our observations are experimentally proven by exciting edge states at the bearded edge in disordered photonic graphene.

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