Single-cone Dirac edge states on a lattice

Alvaro Donís Vela, Carlo W. J. Beenakker

The stationary Dirac equation $(p\cdot \ddot{I}ƒ)\ddot{I}ˆ=E\ddot{I}ˆ$, confined to a two-dimensional (2D) region, supports states propagating along the boundary and decaying exponentially away from the…