期刊
JOURNAL OF CHEMICAL PHYSICS
卷 136, 期 13, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3699188
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资金
- Deutsche Forschungsgemeinschaft (DFG) [KN393/14]
The electronic structure of potassium intercalated picene and coronene films has been studied using photoemission spectroscopy. Picene has additionally been intercalated using sodium. Upon alkali metal addition core level as well as valence band photoemission data signal a filling of previously unoccupied states of the two molecular materials due to charge transfer from potassium. In contrast to the observation of superconductivity in K(x)picene and K(x)coronene (x similar to 3), none of the films studied shows emission from the Fermi level, i.e., we find no indication for a metallic ground state. Several reasons for this observation are discussed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3699188]
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