Adsorption of C[sub 60] on Ta(110): Photoemission and C [ital K]-edge studies

Journal Article · Mon Nov 15 04:00:00 EST 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.15457· OSTI ID:5849201

Ruckman, M W; Xia, B ^[1]; Qiu, S L ^[2]

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1. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Department of Physics, Florida Atlantic University, Boca Raton, Florida 33431 (United States)

Photoelectron and near-edge spectroscopies are used to characterize a C[sub 60] film on a Ta(110) surface. Like similar studies of C[sub 60] on a variety of metal surfaces, the valence band, C 1[ital s] core level, and photoelectron-derived work-function measurements show that C[sub 60] molecular states are aligned with the Fermi level and the charge is transferred from the metal to the fullerene. The photoelectron and near-edge spectra of the C[sub 60] peaks closest to the Fermi level show significant changes in intensity identifying those [pi]-like states as interacting with the substrate. A careful examination of the C 1[ital s] and Ta 4[ital f] core levels suggests that some fraction of the fullerene overlayer decomposes on the clean metal surface leading to or resulting in, a thin layer of carbon between the assembled film and the metal substrate.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5849201
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 48:20; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
CARBON
CHEMICAL REACTIONS
CHEMISORPTION
DECOMPOSITION
ELECTRON SPECTROSCOPY
ELECTRON TRANSFER
ELEMENTS
EMISSION
ENERGY LEVELS
EPITAXY
F STATES
FULLERENES
METALS
NONMETALS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
SECONDARY EMISSION
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SPECTROSCOPY
SURFACE PROPERTIES
TANTALUM
TRANSITION ELEMENTS