Abstract
Thin film growth and electronic structure of C60 on Ni(111) and Cu(111) were studied by reflection high-energy electron diffraction (RHEED) and electron energy loss spectroscopy (EELS). A single-crystalline C60 film is found to grow heteroepitaxially on Ni(111) with a 4×4 structure. The EELS results show peak broadening and energy shifts of π-plasmon and interband transitions. The binding energy of the gg+hg orbital decreases through the interaction with the Cu 3d band for C60/Cu(111), while the binding energy of the hu orbital increases through the interaction with the Ni 3d band for C60/Ni(111). The shift of the binding energy of the C60 orbital can be explained by the position of the C60 orbital relative to the metal 3d band.
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