Sublattice ordering in a dilute ensemble of monovalent adatoms on graphene
Sublattice ordering in a dilute ensemble of monovalent adatoms on graphene
Defects in graphene, such as vacancies or adsorbents attaching themselves to carbons, may preferentially take positions on one of its two sublattices, thus breaking the global lattice symmetry. This leads to opening a gap in the electronic spectrum. We show that such a sublattice ordering may spontaneously occur in a …