Compressibility of bilayer graphene

Details Compressibility of bilayer graphene Compressibility of bilayer graphene

2010-05-12

arxiv.org/abs/1005.2156v1

Phys. Rev. B 82, 155403 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 5 figures

Scientific paper

10.1103/PhysRevB.82.155403

Bilayer graphene is a recently isolated and intriguing class of many-body systems with massive chiral quasiparticles. We present theoretical results for the electronic compressibility of bilayer graphene that are based on a four-band continuum band structure model combined with a random phase approximation treatment of electronic correlations. We find that the compressibility is strongly suppressed by electron-electron interactions at low carrier densities. Correlations do not lead to any qualitative new features, but are crucially important for a quantitative understanding of this fundamental thermodynamic property of graphene bilayers.

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