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Based on first principles calculation, the electronic properties of grapheneon metal (Ti, Ca, Ni, Mn, Co, Fe, Cr, K) modified SiO2 substrate have beenstudied. The results of binding energies supported graphene indicate that themetal atoms are adsorbed more stably on O surface than on Si surface of SiO2substrate, and graphene is adsorbed very stably on metal modified substrate.The band structures of supported graphene are similar with that of suspendinggraphene when deposited on Co modified SiO2 surface, but change obviously withthe effect of decorated Fe atoms. Interesting, a semi-metal band structure witha 1-2 eV gap in spin-up state will occur on the magnetic atoms decoratedsurface.

The electronic properties of graphene on metal modified SiO2 substrate