Observation of topological edge modes in bianisotropic metamaterials

Aleksei Slobozhanyuk, Alexander B Khanikaev, Dmitry Filonov, Daria Smirnova, Andrey Miroshnichenko, Yuri Kivshar

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Existence of robust edge modes at interfaces of topologically distinct systems is one of the most fascinating manifestations of a novel nontrivial state of matter, topological insulators. Such states were originally predicted and discovered in condensed matter physics, but they find their counterparts in different fields of physics, including classical waves and electromagnetics. Here, by employing the near-field scanning techniques, we demonstrate experimentally the topologically robust propagation of electromagnetic waves in bianisotropic metamaterials. A lattice of deliberately engineered metamolecules endows electromagnetic waves with topological protection which allow guiding around sharp corners without back reflection and leakage to radiation.
    Original languageEnglish
    Pages (from-to)1-11
    JournalNature Communications
    VolumeOnline Early Version
    Issue number2015
    Publication statusPublished - 2016

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