Quasiparticle renormalization in ABC graphene trilayers
arXiv:1407.6021 · doi:10.1103/PhysRevB.90.161411
Abstract
We investigate the effect of electron-electron interactions in ABC stacked graphene trilayers. In the gapless regime, we show that the self-energy corrections lead to the renormalization of the dynamical exponent , with and is the number of fermionic species. Although the quasiparticle residue is suppressed near the neutrality point, the lifetime has a sublinear scaling with the energy and the quasiparticles are well defined even at zero energy. We calculate the renormalization of different physical observables, which can be directly measured in experiments.
5 pages, 3 figures
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