Extended Data Fig. 8: Atomic and electronic structure of black phosphorus.

a, Atomic structure of black phosphorus. The primitive cell of four atoms is on the right and the supercell of eight atoms is on the left. b, The BZ of the supercell. c, The BZ of the primitive cell. d, Comparison of the calculated band structures from DFT calculations and tight-binding calculations along high symmetry lines in the reduced BZ of the supercell. e,f, The calculated band structure around the Γ point along the AC direction (e) and along the ZZ direction (f). The Fermi level is set as zero.