Fermi Velocity Enhancement in Monolayer and Bilayer Graphene
arXiv:0902.1230 · doi:10.1016/j.ssc.2009.02.053
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.
8 pages, 5 figures, submitted to the proceedings of the ICTP Conference `Graphene Week 2008' (Trieste, Italy)
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- Many-body orbital paramagnetism in doped graphene sheets
- Electronic Properties of Carbon Nanostructures
- Non-Fermi Liquid behavior in Neutral Bilayer Graphene
- Compressibility of bilayer graphene
- Effective Mass in Bilayer Graphene at Low Carrier Densities: the Role of Potential Disorder and Electron-Electron Interaction
- Quantum capacitance and compressibility of graphene: The role of Coulomb interactions
- Quantum capacitance and Landau parameters of massless Dirac fermions in graphene
- Synergistic correlated states and nontrivial topology in coupled graphene-insulator heterostructures
- Charge compressibility and quantum magnetic phase transition in MoS
- Coulomb drag between two graphene layers at different temperatures