Viewpoint: Electrons in graphene: an interacting fluid par
excellence  Igor F. Herbut, Department of Physics, Simon Fraser
University, Burnaby, British Columbia, Canada V5A 1S6 Published
July 6, 2009  |  Physics 2, 57 (2009)  |  DOI:
10.1103/Physics.2.57  Graphene: A Nearly Perfect Fluid  Markus
Müller, Jörg Schmalian, and Lars Fritz  Published July 6, 2009 |
PDF (free) +Enlarge image Figure 1 Illustration: Alan
Stonebraker  Figure 1 The schematic “flow” of the coupling
constants describing weak electron-electron interaction with
decreasing temperature in graphene. α parameterizes the ∼1/r
tail of the Coulomb interaction, and λ stands collectively for
the electron-electron repulsion on the lattice scale. The
density of the arrows increases with the speed of the flow.
Ever since it was shown that graphene—a single layer of carbon
atoms—could be isolated from graphite, it has occupied a center
stage of condensed matter physics. The popularity of graphene is
rooted in the unusual nature of its low-energy excita