Quantum critical transport in clean graphene
| dc.creator | Fritz, Lars | |
| dc.creator | Schmalian, Joerg | |
| dc.creator | Mueller, Markus | |
| dc.creator | Sachdev, Subir | |
| dc.date | 2008-02-29 | |
| dc.date | 2008-03-09 | |
| dc.date.accessioned | 2026-07-07T09:56:07Z | |
| dc.date.available | 2026-07-07T09:56:07Z | |
| dc.description | We describe electrical transport in ideal single-layer graphene at zero applied bias. There is a crossover from collisionless transport at frequencies larger than k_B T/hbar (T is the temperature) to collision-dominated transport at lower frequencies. The d.c. conductivity is computed by the solution of a quantum Boltzmann equation. Due to a logarithmic singularity in the collinear scattering amplitude (a consequence of relativistic dispersion in two dimensions) quasi-particles and -holes moving in the same direction tend to an effective equilibrium distribution whose parameters depend on the direction of motion. This property allows us to find the non-equilibrium distribution functions and the quantum critical conductivity exactly to leading order in 1/|ln(alpha)| where alpha is the coupling constant characterizing the Coulomb interactions. | |
| dc.description | 19 pages, 1 figure; (v2) added comment on hydrodynamic long-time tails | |
| dc.identifier | https://arxiv.org/abs/0802.4289 | |
| dc.identifier | http://arxiv.org/abs/0802.4289 | |
| dc.identifier | Physical Review B 78, 085416 (2008) | |
| dc.identifier | doi:10.1103/PhysRevB.78.085416 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/166868 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Quantum critical transport in clean graphene | |
| dc.type | text |