Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3557073
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Silicene nanoribbons grown on a silver (110) substrate have been studied by reflection electron energy loss spectroscopy as a function of the electron beam incidence angle alpha. The spectra, taken at the Si K absorption edge (1.840 keV), reveal the presence of two distinct loss structures attributed to transitions 1s ->pi* and 1s ->sigma*, according to their intensity dependence on alpha. Such behavior, when compared to graphite, attests the sp(2)-like hybridization of the silicon valence orbitals in the silicene nanoribbons as is, indeed, for carbon atomic bonds of graphene. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3557073]
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