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arXiv · 1801.05581

Topological nodal states in circuit lattice

Kaifa Luo·Rui Yu·Hongming Weng
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Abstract

The search for artificial structure with tunable topological properties is an interesting research direction of today's topological physics. Here, we introduce a scheme to realize `topological semimetal states' with a three-dimensional periodic inductor-capacitor (LC) circuit lattice, where the topological nodal-line state and Weyl state can be achieved by tuning the parameters of inductors and capacitors. A tight-binding-like model is derived to analyze the topological properties of the LC circuit lattice. The key characters of the topological states, such as the drumhead-like surface bands for nodal-line state and the Fermi-arc-like surface bands for Weyl state, are found in these systems. We also show that the Weyl points are stable with the fabrication errors of electric devices.

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Kaifa Luo, Rui Yu, Hongming Weng. 2018-05-11. Topological nodal states in circuit lattice. https://doi.org/10.1155/2018%2F6793752

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