Final-state effects in photoemission experiments from graphene on Ni(111)

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作者
Thorben Haarlammert
Luca Bignardi
Carsten Winter
Gerhard Fecher
Petra Rudolf
Helmut Zacharias
机构
[1] Physikalisches Institut,
[2] Westfälische Wilhelms-Universität Münster,undefined
[3] Zernike Institute for Advanced Materials,undefined
[4] University of Groningen,undefined
[5] Institut of Inorganic and Analytical Chemistry,undefined
[6] Johannes Gutenberg University Mainz,undefined
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Mesoscopic and Nanoscale Systems;
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摘要
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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