Electron-Electron Interactions in Graphene

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We discuss the validity (or not) of the ring-diagram approximation (i.e. RPA) in the calculation of graphene self-energy in the weak-coupling ($r_s \ll 1$) limit, showing that RPA is a controlled and valid approximation for \textit{extrinsic} graphene where the Fermi level is away from the Dirac point.
updated with additional paragraph and reference

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Materials Science, Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/136887

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0708.3239
 http://arxiv.org/abs/0708.3239

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arXiv