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arXiv · 1407.6021

Quasiparticle renormalization in ABC graphene trilayers

Xu Dou·Akbar Jaefari·Yafis Barlas·Bruno Uchoa
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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 $z=3+α_{1}/N$, with $α_{1}\approx0.52$ and $N$ 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.

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Xu Dou, Akbar Jaefari, Yafis Barlas, Bruno Uchoa. 2014-08-29. Quasiparticle renormalization in ABC graphene trilayers. https://doi.org/10.1103/physrevb.90.161411

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