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) For x- (y- and z)-polarized incident light the linear absorption spectra in panels (a), (b), and (c), respectively, under the five types of electric field with the strength (VGA = 0.5 eV, VGB = -0.5 eV, and VGC = 0.5 eV). The gray dotted line is the spectrum without electric field for comparison. |