Tunable electromagnetically induced transparency at terahertz frequencies in coupled graphene metamaterial*
Ding Guo-Wena), Liu Shao-Bina), Zhang Hai-Fenga),b), Kong Xiang-Kuna),c), Li Hai-Minga), Li Bing-Xianga), Liu Si-Yuana), Li Haib)
       
Current density distributions on the unit cell, computed at frequencies of (a) 10.36 THz, (b) 10.95 THz, (c) 11.67 THz. The color scale is normalized between 0 and 1.