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arXiv · 1811.12062

Chiral 1D Floquet topological insulators beyond rotating wave approximation

Dante M. Kennes·Niclas Müller·Mikhail Pletyukhov·Clara Weber·Christoph Bruder·Fabian Hassler·Jelena Klinovaja·Daniel Loss·Herbert Schoeller
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Abstract

We study one-dimensional (1D) Floquet topological insulators with chiral symmetry going beyond the standard rotating wave approximation. The occurrence of many anticrossings between Floquet replicas leads to a dramatic extension of phase diagram regions with stable topological edge states (TESs). We present an explicit construction of all TESs in terms of a truncated Floquet Hamiltonian in frequency space, prove the bulk-boundary correspondence, and analyze the stability of the TESs in terms of their localization lengths. We propose experimental tests of our predictions in curved bilayer graphene.

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Dante M. Kennes, Niclas Müller, Mikhail Pletyukhov, Clara Weber, Christoph Bruder, Fabian Hassler, Jelena Klinovaja, Daniel Loss, Herbert Schoeller. 2020-05-13. Chiral 1D Floquet topological insulators beyond rotating wave approximation. https://doi.org/10.1103/physrevb.100.041103

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