Band structure

Compute the electronic band structure along the high-symmetry path of the Brillouin zone (Setyawan–Curtarolo), with the density of states on a dense mesh beside it. Returns a compact JSON summary (path, fermi, nbands, nspin) plus a .bandstructure file Ouro renders as an interactive band plot. Use for dispersion, band edges, direct versus indirect gaps, and carrier character in metals and semiconductors.