The formation of an energy gap in graphene on ruthenium by controlling the interface

Details The formation of an energy gap in graphene on ruthenium by controlling the interface The formation of an energy gap in graphene on ruthenium by controlling the interface

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010njph...12c3014e&link_type=abstract

New Journal of Physics, Volume 12, Issue 3, pp. 033014 (2010).

Physics

22

Scientific paper

In this work, we have investigated the spectral function of graphene on a monolayer of intercalated gold on Ru(0001) using angle-resolved photoemission spectroscopy (ARPES). The intercalation leads to a decoupling of the graphene film, as documented by emergence of the characteristic linear π-bands near the Fermi level. However, a band gap at the band crossing is observed. We relate this gap opening to the broken symmetry of the two carbon sublattices, induced by the special lattice mismatch of the graphene and the intercalated gold monolayer.

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