Floquet higher-order Weyl and nexus semimetals

• URL: http://arxiv.org/abs/2104.07433v1
• Date: Thu, 15 Apr 2021 13:06:36 GMT
• Title: Floquet higher-order Weyl and nexus semimetals
• Authors: Weiwei Zhu, Muhammad Umer, and Jiangbin Gong
• Abstract summary: We present a strategy to obtain, using time-sequenced normal insulator phases only, Floquet higher-order Weyl semimetals and Floquet higher-order nexus semimetals. The fascinating topological phases we obtain are previously unknown and can be experimentally studied using, for example, a three-dimensional lattice of coupled ring resonators.
• Score: 1.417373050337415
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: This work reports the general design and characterization of two exotic, anomalous nonequilibrium topological phases. In equilibrium systems, the Weyl nodes or the crossing points of nodal lines may become the transition points between higher-order and first-order topological phases defined on two-dimensional slices, thus featuring both hinge Fermi arc and surface Fermi arc. We advance this concept by presenting a strategy to obtain, using time-sequenced normal insulator phases only, Floquet higher-order Weyl semimetals and Floquet higher-order nexus semimetals, where the concerned topological singularities in the three-dimensional Brillouin zone border anomalous two-dimensional higher-order Floquet phases. The fascinating topological phases we obtain are previously unknown and can be experimentally studied using, for example, a three-dimensional lattice of coupled ring resonators.

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