Coulomb interacting Dirac fermions in disordered graphene

Details Coulomb interacting Dirac fermions in disordered graphene Coulomb interacting Dirac fermions in disordered graphene

2006-04-06

arxiv.org/abs/cond-mat/0604180v4

Phys. Rev. B 74, 161402(R) (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Latex, 4 pages

Scientific paper

10.1103/PhysRevB.74.161402

We study interacting Dirac quasiparticles in disordered graphene and find that an interplay between the unscreened Coulomb interactions and pseudo-relativistic quasiparticle kinematics can be best revealed in the ballistic regime, whereas in the diffusive limit the behavior is qualitatively (albeit, not quantitatively) similar to that of the ordinary 2DEG with parabolic dispersion. We calculate the quasiparticle width and density of states that can be probed by photoemission, tunneling, and magnetization measurements.

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