paper

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

arXiv:1705.03056 · doi:10.1103/PhysRevB.96.041206

Abstract

Weyl points with monopole charge have been extensively studied, however, real materials of multi-Weyl points, whose monopole charges are higher than , 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.

11 pages, 6 figures, including supplemental material. Published version

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