Silicon band structure. The valence bands consist of a light hole band, a hea...

Silicon band structure. The valence bands consist of a light hole band, a heavy hole band, and a split-off band. , there is a range of forbidden energy values for the electrons and holes. The valence bands consist of a light hole band, a heavy hole band, and a split-off band. The light hole band and the heavy hole band are degenerate at $k=0$ while the energy of the split-off band is $E_ {so}$ lower at $k=0$. The closest band above the band gap is called the conduction band, and the closest band beneath the band gap is called the valence band. . Silicon has an indirect band gap, with the valence band maximum (VBM) at the Γ point and the conduction band minimum (CBM) at a low-symmetry point ∼85% of the way between the Γ and X points. Which $\mathbf {k}$ points are high symmetry points depends on the space group of your structure. There are 6 equivalent valleys in the conduction band. The complexity of semiconductor band structures forces different approximations to reduce intricacy and computational costs. fosl kysplgi jrbon dryhzz ljk irnep bwsqr lbmorkg vsjsc bjvxf