Journal
NANO LETTERS
Volume 9, Issue 8, Pages 2844-2848Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl900927f
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Funding
- U.S. Department of Energy [DE-FG02-88-ER13937, DE-FG02-03ER 15463, DE-AC02-98CH 10886]
- National Science Foundation [CHE-06-41523, CHE-07-01483]
- New York State Office of Science, Technology, and Academic Research (NYSTAR)
- Fondazione Cassa di Risparmio di Modena
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We have grown well-ordered graphene adlayers on the lattice-matched Co(0001) surface, Low-temperature scanning tunneling microscopy measurements demonstrate an on-top registry of the carbon atoms with respect to the Co(0001) surface. The tunneling conductance spectrum shows that the electronic structure is substantially altered from that of isolated graphene, implying a strong coupling between graphene and cobalt states. Calculations using density functional theory confirm that structures with on-top registry have the lowest energy and provide clear evidence for strong electronic coupling between the graphene pi-states and Co d-states at the interface.
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