Work

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

Year: 2010

Type: article

Abstract: 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.

Source: New Journal of Physics

DOI: 10.1088/1367-2630/12/3/033014

Authors: C Enderlein, Y S Kim, A Bostwick, E Rotenberg, K Horn

Institutions: Lawrence Berkeley National Laboratory, Fritz Haber Institute of the Max Planck Society, Advanced Light Source

Language: English

Topic: Graphene research and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $955

Funders: U.S. Department of Energy, Office of Science, Basic Energy Sciences