Minimal conductivity in graphene: interaction corrections and ultraviolet anomaly
| dc.creator | Mishchenko, E. G. | |
| dc.date | 2007-09-27 | |
| dc.date | 2009-02-25 | |
| dc.date.accessioned | 2026-07-07T12:46:00Z | |
| dc.date.available | 2026-07-07T12:46:00Z | |
| dc.description | Conductivity of a disorder-free intrinsic graphene is studied to the first order in the long-range Coulomb interaction and is found to be σ=σ_0(1+0.01 g), where 'g' is the dimensionless ("fine structure") coupling constant. The calculations are performed using three different methods: i) electron polarization function, ii) Kubo formula for the conductivity, iii) quantum transport equation. Surprisingly, these methods yield different results unless a proper ultraviolet cut-off procedure is implemented, which requires that the interaction potential in the effective Dirac Hamiltonian is cut-off at small distances (large momenta). | |
| dc.description | 5 pages, 1 figure; Reply to the Comment by I.F. Herbut, V. Juricic, O. Vafek, and M.J. Case, "Comment on "Minimal conductivity in graphene: Interaction corrections and ultraviolet anomaly" by Mishchenko E. G.", arXiv:0809.0725, is added in Appendix | |
| dc.identifier | https://arxiv.org/abs/0709.4245 | |
| dc.identifier | http://arxiv.org/abs/0709.4245 | |
| dc.identifier | Europhys. Lett. 83, 17005 (2008) | |
| dc.identifier | doi:10.1209/0295-5075/83/17005 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/221236 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Minimal conductivity in graphene: interaction corrections and ultraviolet anomaly | |
| dc.type | text |