Fig. 5: Manipulation of the tilt of Dirac cone by carbon substitution in 8 Pmmn borophene.
From: Tunning the tilt of the Dirac cone by atomic manipulations in 8Pmmn borophene
a Top view of crystal structure of B6C2-R-[C5&C6] and b its Brillouin zone. The red circles denote carbon atoms. c Density functional theory with Perdew-Burke-Ernzerhof (DFT-PBE) band structure of B6C2-R-[C5&C6], d its orbital-projected band structures for two atoms and (e) its three dimensional reconstruction. f–j The same as (a–e) for B6C2-I-[C2&C3]. The horizontal arrows in panels c and h indicate the direction of the displacement of the Dirac node with respect to the parent B8. The vertical arrows in a and f show the direction of movement of the lattice sites upon carbon substitution.
