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arXiv · 1705.03056

Floquet multi-Weyl points in crossing-nodal-line semimetals

Zhongbo Yan·Zhong Wang
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Abstract

Weyl points with monopole charge $\pm 1$ have been extensively studied, however, real materials of multi-Weyl points, whose monopole charges are higher than $1$, have yet to be found. In this Rapid Communication, we show that nodal-line semimetals with nontrivial line connectivity provide natural platforms for realizing Floquet multi-Weyl points. In particular, we show that driving crossing nodal lines by circularly polarized light generates double-Weyl points. Furthermore, we show that monopole combination and annihilation can be observed in crossing-nodal-line semimetals and nodal-chain semimetals. These proposals can be experimentally verified in pump-probe angle-resolved photoemission spectroscopy.

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Zhongbo Yan, Zhong Wang. 2017-05-08. Floquet multi-Weyl points in crossing-nodal-line semimetals. https://doi.org/10.1103/physrevb.96.041206

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