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Paper   IPM / Physic / 13489
School of Physics
  Title:   Quantum capacitance and Landau parameters of massless Dirac fermions in graphene
1.  R. Asgari
2.  M.I. Katsnelson
3.  M. Polini
  Status:   Published
  Journal: Ann. Phys.
  Vol.:  526
  Year:  2014
  Pages:   359-365
  Supported by:  IPM
We present extensive numerical results for the thermodynamic density of states (i.e. quantum capacitance) of a two-dimensional massless Dirac fermion fluid in a doped graphene sheet. In particular, by employing the random phase approximation, we quantify the impact of screening exerted by a metal gate located nearby a graphene flake. Finally, we calculate the spin- and circularly-symmetric Landau parameter, which can be experimentally extracted from independent measurements on the same setup of the quantum capacitance and quasiparticle velocity.

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