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EnglishWe use secondary electron spectroscopy to probe the excited states of graphene adsorbed on a Ni(111) surface. A fine structure directly related to the empty bands above the vacuum level of the sample is resolved in the spectra excited by electrons. Ion-induced spectra reveal a high energy feature that is consistent with electron promotion from valence to conduction band states, from which electrons emerge into vacuum.
We use secondary electron spectroscopy to probe the excited states of graphene adsorbed on a Ni(111) surface. A fine structure directly related to the empty bands above the vacuum level of the sample is resolved in the spectra excited by electrons. Ion-induced spectra reveal a high energy feature that is consistent with electron promotion from valence to conduction band states, from which electrons emerge into vacuum. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3522891]
Observation of excited states of graphene on Ni(111) by secondary electron spectroscopy / Riccardi, Pierfrancesco; Cupolillo, Anna; Pisarra, M; Sindona, Antonio; Caputi, Lorenzo. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 97:22(2010), pp. 221909.221909-221909.221909-3.
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| Titolo: | Observation of excited states of graphene on Ni(111) by secondary electron spectroscopy |
| Autori: | |
| Data di pubblicazione: | 2010 |
| Rivista: | |
| Citazione: | Observation of excited states of graphene on Ni(111) by secondary electron spectroscopy / Riccardi, Pierfrancesco; Cupolillo, Anna; Pisarra, M; Sindona, Antonio; Caputi, Lorenzo. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 97:22(2010), pp. 221909.221909-221909.221909-3. |
| Handle: | http://hdl.handle.net/20.500.11770/127024 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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