Topological conduction of Sb films on boron-doped graphene

It has been shown that thin antimony films can have topological surface states by adsorption of non-magnetic impurity atoms. Using density functional calculations, we show that Sb films placed on boron-doped graphene also have Dirac cones and can provide spin-polarized transport. The calculated binding energy indicates that it is a robust structure and thus a viable conduit for topological conduction.