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Ghost excitonic insulator transition in layered graphite

D. V. Khveshchenko
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Abstract

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.

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D. V. Khveshchenko. 2001-12-11. Ghost excitonic insulator transition in layered graphite. https://doi.org/10.1103/physrevlett.87.246802

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