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.

Liu Hong
       

(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.