Quadratic Dispersion and Damping Processes of π Plasmon in Monolayer Graphene on Pt(111)
作者： Antonio Politano , Antonio Raimondo Marino , Vincenzo Formoso , Daniel Farías , Rodolfo Miranda
DOI: 10.1007/S11468-011-9317-1
关键词:
摘要: High-resolution electron energy-loss spectroscopy has been used to study the π plasmon in monolayer graphene grown on Pt(111). A quadratic dispersion observed, contrast linear reported for SiC(0001) and agreement with recent experiments graphene/Ni(111). Despite weak interaction of Pt(111) surface, our results indicate that screening by underlying metal substrate strongly influences both relation damping processes mode electrons.
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