Finite-temperature Screening and the Specific Heat of Doped Graphene Sheets

Details Finite-temperature Screening and the Specific Heat of Doped Graphene Sheets Finite-temperature Screening and the Specific Heat of Doped Graphene Sheets

2008-11-11

arxiv.org/abs/0811.1723v1

J. Phys. A : Math. Theor. 42, 214015 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 5 figures, Submitted to J. Phys. A

Scientific paper

At low energies, electrons in doped graphene sheets are described by a massless Dirac fermion Hamiltonian. In this work we present a semi-analytical expression for the dynamical density-density linear-response function of noninteracting massless Dirac fermions (the so-called "Lindhard" function) at finite temperature. This result is crucial to describe finite-temperature screening of interacting massless Dirac fermions within the Random Phase Approximation. In particular, we use it to make quantitative predictions for the specific heat and the compressibility of doped graphene sheets. We find that, at low temperatures, the specific heat has the usual normal-Fermi-liquid linear-in-temperature behavior, with a slope that is solely controlled by the renormalized quasiparticle velocity.

Affiliated with

Also associated with

No associations

Rating

Finite-temperature Screening and the Specific Heat of Doped Graphene Sheets does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Finite-temperature Screening and the Specific Heat of Doped Graphene Sheets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finite-temperature Screening and the Specific Heat of Doped Graphene Sheets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-543872