Optimal Electron Doping of a C60 Monolayer on Cu(111) via Interface ReconstructionPhysical Review Letters (2010)
We demonstrate the charge state of C60 on a Cu(111) surface can be made optimal, i.e., forming C60 3- as required for superconductivity in bulk alkali-doped C60, purely through interface reconstruction rather than with foreign dopants. We link the origin of the C60 3- charge state to a reconstructed interface with ordered (4 × 4) 7-atom vacancy 2 holes in the surface. In contrast, C60 adsorbed on unreconstructed Cu(111) receives a much smaller amount of electrons. Our results illustrate a definitive interface effect that affects the electronic properties of molecule-electrode contact.
Citation InformationWoei Wu Pai, H. T. Jeng, C.-M. Cheng, C.-H. Lin, et al.. "Optimal Electron Doping of a C60 Monolayer on Cu(111) via Interface Reconstruction" Physical Review Letters Vol. 104 Iss. 3 (2010) p. 036103-1 - 036103-4 ISSN: 10797114
Available at: http://works.bepress.com/mavanhove/87/