Tunable edge bands and optical properties in black phosphorus nanoribbons under electric field<xref rid="cpb_27_12_127301fn1" ref-type="fn">*</xref> <fn id="cpb_27_12_127301fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant No. 10947004) and the Jiangsu Government Scholarship for Overseas Studies.</p> </fn>

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) The band structures of nZZ-BPNR with N_w = 20 under five types of electric field configuration. Here the strengths of gate voltages on different regions are V_GA = 0.50 eV, V_GB = —0.50 eV, and V_GC = 0.50 eV in panel (e) for the fifth type. The black vertical arrows denote the four low-energy transitions at the Г point.