Tunable plasmon-induced transparency based on asymmetric H-shaped graphene metamaterials Project supported by the Key Science and Technology Research Project of Henan Province, China (Grant Nos. 162102210164 and 1721023100107) and the Natural Science Foundation of Henan Educational Committee, China (Grant No. 17A140002). |
(color online) (a) Transmission spectra of graphene based PIT structure under normal incidence at different values of EF, and (b) relationship of the resonant PIT peak with Fermi energy EF. |