Orientation dependence of charge transfer for C{sub 60} on Cu(100)

Journal Article · Mon Mar 28 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3569719· OSTI ID:21518362

Daughton, D R; Gupta, J A ^[1]

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1. Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States)

Scanning tunneling microscopy was used to characterize the lowest unoccupied molecular orbitals (LUMO), up to LUMO+3, of individual C{sub 60} molecules within monolayer films on Cu(100). On this surface C{sub 60} orients in four distinct configurations with respect to the substrate. Tunneling spectroscopy and spectroscopic imaging were used to identify the energies and spatial distributions of the molecular orbitals. We find that the LUMO shifts by {approx}200 meV depending on the orientation of the molecule, which suggests charge transfer between the surface and molecule is orientation dependent. Orientation-dependent shifts were also observed for the higher unoccupied molecular orbitals.

• OSTI ID: 21518362
• Journal Information: Applied Physics Letters, Vol. 98, Issue 13; Other Information: DOI: 10.1063/1.3569719; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHARGE EXCHANGE
CONFIGURATION
FULLERENES
MOLECULES
ORIENTATION
SCANNING TUNNELING MICROSCOPY
SPATIAL DISTRIBUTION
SPECTROSCOPY
SUBSTRATES
SURFACES
TUNNEL EFFECT
CARBON
DISTRIBUTION
ELEMENTS
MICROSCOPY
NONMETALS