期刊
NANO RESEARCH
卷 9, 期 6, 页码 1795-1800出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-016-1072-3
关键词
graphene; electronic properties; synchrotron radiation; X-ray photoelectron spectroscopy; near-edge X-ray photoelectron spectroscopy
类别
资金
- Elettra-Sincrotrone Trieste S.C.p.A.
Graphene/Ni(110) has been studied by time-resolved X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure. The C 1s core level shows a splitting typical of periodically rippled interfaces. The analysis of the C K-edge reveals that the interface states previously observed for graphene/Ni(111) are suppressed in graphene/Ni(110). This suppression is due to the reduced hybridization of the Dirac-cone electrons in graphene with the d-bands of the (110)-oriented nickel contacts. Our results show that, contrary to commensurate growth of graphene on Ni(111), epitaxially grown graphene on Ni(110) behaves as a quasi-freestanding sheet, as the lattice mismatch gives rise to a moir, reconstruction.
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