Effect of electron-electron interactions on the conductivity of clean graphene

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Publication Type Journal Article
School or College College of Science
Department Physics
Creator Mishchenko, Eugene
Title Effect of electron-electron interactions on the conductivity of clean graphene
Date 2007-05
Description Minimal conductivity of a single undoped graphene layer is known to be of the order of the conductance quantum, independent of the electron velocity. We show that this universality does not survive electron-electron interaction, which results in nontrivial frequency dependence. We begin with analyzing the perturbation theory in the interaction parameter g for the electron self-energy and observe the failure of the random-phase approximation. The optical conductivity is then derived from the quantum kinetic equation, and the exact result is obtained in the limit when g « 1 « g |nω|.
Type Text
Publisher American Physical Society
Journal Title Physical Review Letters
Volume 98
Issue 21
DOI 10.1103/PhysRevLett.98.216801
citatation_issn 0031-9007
Subject Optical conductivity; Perturbation theory
Subject LCSH Electron-electron interactions; Graphene; Particles (Nuclear physics); Electric conductivity
Language eng
Bibliographic Citation Mishchenko, E. (2007). Effect of electron-electron interactions on the conductivity of clean graphene. Physical Review Letters, 98(21), 216801.
Rights Management (c) American Physical Society http://dx.doi.org/10.1103/PhysRevLett.98.216801
Format Medium application/pdf
Format Extent 169,671 bytes
Identifier ir-main,11786
ARK ark:/87278/s6zs3dp6
Setname ir_uspace
ID 703262
Reference URL https://collections.lib.utah.edu/ark:/87278/s6zs3dp6
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