Tunable edge bands and optical properties in black phosphorus nanoribbons under electric field Project supported by the National Natural Science Foundation of China (Grant No. 10947004) and the Jiangsu Government Scholarship for Overseas Studies. |
(color online) The band structure (a) and the linear absorption spectrum (b) of monolayer phosphorene. For panel (b) the total numer of k-point is Nx ⋅ Ny = 8 × 104 large enough to make the curve lines smooth in the calculation. |