摘要
Te search for artifcial structure with tunable topological properties is an interesting research direction of today’s topological physics.Here,we introduce a scheme to realize topological nodal 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.Te 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.
基金
Te authors thank Hua Jiang,Yuanyuan Zhao,and Ang Cao for their very helpful discussions.Tis work was supported by the National Key Research and Development Program of China(nos.2017YFA0303402,2017YFA0304700,and 2016YFA0300600)
and the National Natural Science Foundation of China(nos.11674077,11422428,11674369,and 11404024)
Rui Yu acknowledges funding from the National Tousand Young Talents Program.Te numerical calculations in this work have been done on the supercomputing system in the Supercomputing Center of Wuhan University.
