Effective Theory of Floquet Topological Transitions

2014/06/05 by Arijit Kundu, H. A. Fertig, Babak Seradjeh
Mathematics · Physics and Astronomy · #Combinatorics #Floquet theory #Mathematics #Noncommutative and Quantum Gravity Theories #Nonlinear system #Physics #Quantum many-body systems #Quantum mechanics #Statistical physics #Theoretical physics #Topological Materials and Phenomena #Topology (electrical circuits) #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.113.236803

published as Phys. Rev. Lett. 113, 236803 (2014) · 4+epsilon pages, 4 figures, supplemental material

arxiv created 2014/06/05 · openalex publication_date 2014/12/03 · arxiv updated 2014/12/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

We develop a theory of topological transitions in a Floquet topological insulator, using graphene irradiated by circularly polarized light as a concrete realization. We demonstrate that a hallmark signature of such transitions in a static system, i.e., metallic bulk transport with conductivity of order e²/h, is substantially suppressed at some Floquet topological transitions in the clean system. We determine the conditions for this suppression analytically and confirm our results in numerical simulations. Remarkably, introducing disorder dramatically enhances this transport by several orders of magnitude.

Citations

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