Coulomb interaction in graphene: Relaxation rates and transport

Details Coulomb interaction in graphene: Relaxation rates and transport Coulomb interaction in graphene: Relaxation rates and transport

2010-11-23

arxiv.org/abs/1011.5217v1

Phys.Rev.B83:155441,2011

Physics

Condensed Matter

Strongly Correlated Electrons

28 pages, 16 figures

Scientific paper

10.1103/PhysRevB.83.155441

We analyze the inelastic electron-electron scattering in undoped graphene within the Keldysh diagrammatic approach. We demonstrate that finite temperature strongly affects the screening properties of graphene, which, in turn, influences the inelastic scattering rates as compared to the zero-temperature case. Focussing on the clean regime, we calculate the quantum scattering rate which is relevant for dephasing of interference processes. We identify an hierarchy of regimes arising due to the interplay of a plasmon enhancement of the scattering and finite-temperature screening of the interaction. We further address the energy relaxation and transport scattering rates in graphene. We find a non-monotonic energy dependence of the inelastic relaxation rates in clean graphene which is attributed to the resonant excitation of plasmons. Finally, we discuss the temperature dependence of the conductivity at the Dirac point in the presence of both interaction and disorder. Our results complement the kinetic-equation and hydrodynamic approaches for the collision-limited conductivity of clean graphene and can be generalized to the treatment of physics of inelastic processes in strongly non-equilibrium setups.

Affiliated with

Also associated with

No associations

Rating

Coulomb interaction in graphene: Relaxation rates and transport 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 Coulomb interaction in graphene: Relaxation rates and transport, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coulomb interaction in graphene: Relaxation rates and transport will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-239775