Electronic Structure of Single-Wall Silicon Nanotubes and Silicon Nanoribbons: Helical Symmetry Treatment and Effect of Dimensionality
Figure 10
Calculated gap of SWSiNTs as a function of nanotube diameter. The numbers at the peaks are -values of particular helical group which determine directly also the fold-number of particular tubular rotational axis symmetry. Horizontal dotted line indicates calculated gap (1.24 eV) of bulk silicon with cF8 diamond-like structure.