Ghost excitonic insulator transition in layered graphite.
Some unusual properties of layered graphite, including a linear energy dependence of the quasiparticle damping and weak ferromagnetism at low doping, are explained as a result of the proximity of a single graphene sheet to the excitonic insulator phase which can be further stabilized in a doped system of many layers stacked in the staggered ( ABAB...) configuration.
Khveshchenko
D V
DV
Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA.