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arXiv · 2409.14333

Five-dimensional Floquet topological semimetals with emergent Yang monopoles and linked Weyl surfaces

Zheng-Rong Liu·Rui Chen·Bin Zhou
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Abstract

Recently, Floquet topological matter has attracted significant attention for its potential to reveal novel topological phases inaccessible in static systems. In this paper, we investigate the effect of a time-periodic driving on the five-dimensional (5D) normal insulators. We show that the time-periodic driving can induce a topological phase transition from a \textbf{TP} (time reversal combined with space inversion) symmetry-preserving normal insulator to a 5D Floquet topological semimetal with emergent Yang monopoles characterized by the second Chern number. Additionally, we show that this time-periodic driving can also lead to a topological phase transition from a \textbf{TP} symmetry-breaking normal insulator to a 5D Floquet topological semimetal with a Hopf link formed by Weyl surfaces. Besides, further increasing the strength of the time-periodic driving, the two 5D Floquet topological semimetal phases are transformed into the 5D Floquet Chern insulators. Our paper is helpful for future studies in higher dimensional Floquet systems.

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Zheng-Rong Liu, Rui Chen, Bin Zhou. 2024-09-22. Five-dimensional Floquet topological semimetals with emergent Yang monopoles and linked Weyl surfaces. https://doi.org/10.1103/physrevb.111.045302

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