Direct Observation of Dirac Cone in Multilayer Silicene Intercalation Compound CaSi2. (15th December 2014) - Noguchi, Eiichi
Abstract Calcium‐intercalated multilayer silicene CaSi 2 exhibits a massless Dirac‐cone π‐electron‐band dispersion like graphene, while the Dirac point is about 2 eV away from the Fermi level due to diiimide‐based charge transfer from the Ca atoms to the silicene layers. This indicates that the graphene‐like electronic structure with a massless Dirac cone is stably formed in the metal‐intercalated multilayer silicene.