Graphene analogues

A duo of graphene mimics

Electron-electron interactions in artificial graphene

Creating, moving and merging Dirac points with a Fermi gas in a tunable honeycomb lattice.

Chiral Symmetry and Fermion Doubling in the Zero-mode Landau Levels of
Massless Dirac Fermions with Disorder

How to Empower your Quantum Gas

Dirac point engineering :
Evolution and merging of Dirac points in optical lattices

They say "staggered tunneling" is the key, but this is the only reference Google can find to it:

Interacting p-orbital fermions in optical lattices 
from Mott to topological insulator