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Final-state effects in photoemission experiments from graphene on Ni(111) |
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| Authors: | Thorben?Haarlammert Luca?Bignardi Carsten?Winter Gerhard?Fecher |
| Institution: | 1.Physikalisches Institut, Westf?lische Wilhelms-Universit?t Münster,Münster,Germany;2.Zernike Institute for Advanced Materials, University of Groningen,Groningen,The Netherlands;3.Institut of Inorganic and Analytical Chemistry, Johannes Gutenberg University Mainz,Mainz,Germany |
| Abstract: | Photon-energy dependent photoemission experiments using high harmonic radiation as a tunable photon source on epitaxially grown graphene on a Ni(111) substrate are presented. A resonance in the photoemission cross section for the σ and π states of graphene was observed and compared to a simple model for the determination of photoemission cross sections of free standing graphene, pointing out the role of the interaction of graphene with the nickel substrate. |
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