Floquet chiral magnetic effect

Sho Higashikawa; Masaya Nakagawa; Masahito Ueda

doi:10.1103/physrevlett.123.066403

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arXiv · 1806.06868

Floquet chiral magnetic effect

Sho Higashikawa·Masaya Nakagawa·Masahito Ueda

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Abstract

A single Weyl fermion, which is prohibited in static lattice systems by the Nielsen-Ninomiya theorem, is shown to be realized in a periodically driven three-dimensional lattice system with a topologically nontrivial Floquet unitary operator, manifesting the chiral magnetic effect. We give a topological classification of Floquet unitary operators in the Altland-Zirnbauer symmetry classes for all dimensions, and use it to predict that all gapless surface states of topological insulators and superconductors can emerge in bulk quasienergy spectra in Floquet systems.

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Sho Higashikawa, Masaya Nakagawa, Masahito Ueda. 2018-06-18. Floquet chiral magnetic effect. https://doi.org/10.1103/physrevlett.123.066403

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