Tunable hybridization of electronic states of graphene and a metal surface

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We present an approach to monitor and control the strength of the hybridization between electronic states of graphene and metal surfaces. Inspecting the distribution of the $π$ band in a high-quality graphene layer synthesized on Ni(111) by angle-resolved photoemission, we observe a new "kink" feature which indicates a strong hybridization between $π$ and \textit{d} states of graphene and nickel, respectively. Upon deposition and gradual intercalation of potassium atoms into the graphene/Ni(111) interface, the "kink" feature becomes less pronounced pointing at potassium mediated attenuation of the interaction between the graphene and the substrate.

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Materials Science, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/157125

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0803.2761
 http://arxiv.org/abs/0803.2761

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arXiv