Publication Type |
Manuscript |
School or College |
College of Science |
Department |
Physics |
Creator |
Mishchenko, Eugene |
Title |
Minimal conductivity in graphene: interaction corrections and ultraviolet anomaly |
Date |
2008-07-01 |
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 ? = ?0(1+0.01g), 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). |
Type |
Text |
Publisher |
Institute of Physics (IOP) |
Journal Title |
Europhysics Letters (EPL) |
Volume |
83 |
Issue |
1 |
First Page |
17005 |
DOI |
10.1209/0295-5075/83/17005 |
citatation_issn |
0295-5075 |
Subject |
Optical conductivity |
Subject LCSH |
Graphene; Electron-electron interactions; Electric conductivity |
Language |
eng |
Bibliographic Citation |
Mishchenko, E. (2008). Minimal conductivity in graphene: interaction corrections and ultraviolet anomaly. Europhysics Letters, 83(1), 17005. |
Rights Management |
(c) Institute of Physics (IOP) http://dx.doi.org/10.1209/0295-5075/83/17005 |
Format Medium |
application/pdf |
Format Extent |
503,620 bytes |
Identifier |
ir-main,11780 |
ARK |
ark:/87278/s60g43tv |
Setname |
ir_uspace |
ID |
707548 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s60g43tv |