Loss induced negative refraction and super-prism effect at highly absorptive interface
Wu Jian1, 4, †, Wang Tao1, Hou Tianyue1, Kan Xuefen2, Yin Cheng2, 3, 4, Zhou Pu1, ‡, Cao Zhuangqi3
       

Orientations of the wave vectors at the interface, where it is complex. The black vectors denote real phase vectors, while the blue vectors are complex. The subscripts ⊥ and ∥ define the perpendicular and parallel components to the interface, respectively.