An Empirical Determination of Image States in Graphene Through Two-Photon Photoemission
نویسندگان
چکیده
منابع مشابه
Time-resolved two-photon photoemission of unoccupied electronic states of periodically rippled graphene on Ru(0001).
The unoccupied electronic states of epitaxially grown graphene on Ru(0001) have been explored by time- and angle-resolved two-photon photoemission. We identify a Ru derived resonance and a Ru/graphene interface state at 0.91 and 2.58 eV above the Fermi level, as well as three image-potential derived states close to the vacuum level. The most strongly bound, short-lived, and least dispersing ima...
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