Journal
PHYSICAL REVIEW B
Volume 82, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.155403
Keywords
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Funding
- CNR-CSIC
- Welch Foundation [F-1473]
- Department of Energy [DE-FG03-02ER45958]
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Bilayer graphene is a recently isolated and intriguing interacting electron system 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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