3 years ago

Topological nodal states in circuit lattice.

Hongming Weng, Rui Yu, Kaifa Luo

We introduce a scheme to realize topological nodal states with a three-dimensional periodic inductor-capacitor (LC) circuit lattice. A tight-binding model is derived to study the spectral properties of the LC circuit lattice. We demonstrate that the topological nodal-line and Weyl points can be achieve by tuning the values of the inductance and capacitance. The key characters of the topological states such as the drumhead like surface state for nodal-line states and the Fermi-arc surface states for Weyl semimetals are found in these LC circuit lattices. We also show that the Weyl points are stable with the fabrication errors of electric devices.

Publisher URL: http://arxiv.org/abs/1801.05581

DOI: arXiv:1801.05581v1

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