Comparison of electronic structure between monolayer silicenes on Ag (111)\ |
(a) and (b) Simulated STM images (SIM) combined with the real STM images of the 4 × 4 and phases, respectively. Structural models of (c) 4 × 4 and (d) phases optimized by the DFT calculations. The unit cell of each model is indicated by yellow rhombus and the small blue rhombuses indicate the corresponding 1 × 1 unit cells. (e) and (f) the side views of each model. |