Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4793199
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Funding
- Comunidad de Madrid (Spain) through the program NANOBIOMAGNET [CAM s2009/MAT-1726]
- MINECO (Spain) [MAT2011-25046, CSD-2007-00010]
- EU through the network ELFOS [FP7-ICT2009-6]
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We have performed low temperature scanning tunnelling spectroscopy measurements on graphene epitaxially grown on Ru(0001). An inelastic feature, related to the excitation of a vibrational breathing mode of the graphene lattice, was found at 360meV. The change in the differential electrical conductance produced by this inelastic feature, which is associated with the electron-phonon interaction strength, varies spatially from one position to other of the graphene supercell. This inhomogeneity in the electronic properties of graphene on Ru(0001) results from local variations of the carbon-ruthenium interaction due to the lattice mismatch between the graphene and the Ru(0001) lattices. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4793199]
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