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arXiv · 0902.1230

Fermi Velocity Enhancement in Monolayer and Bilayer Graphene

Giovanni Borghi·Marco Polini·Reza Asgari·A. H. MacDonald
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Abstract

In single-layer graphene sheets non-local interband exchange leads to a renormalized Fermi-surface effective mass which vanishes in the low carrier-density limit. We report on a comparative study of Fermi surface effective mass renormalization in single-layer and AB-stacked bilayer graphene. We explain why the mass does not approach zero in the bilayer case, although its value is still strongly suppressed.

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Giovanni Borghi, Marco Polini, Reza Asgari, A. H. MacDonald. 2009-02-07. Fermi Velocity Enhancement in Monolayer and Bilayer Graphene. https://doi.org/10.1016/j.ssc.2009.02.053

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