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arXiv · 0707.4248

Effect of Holstein phonons on the electronic properties of graphene

T. Stauber·N. M. R. Peres
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Abstract

We obtain the self-energy of the electronic propagator due to the presence of Holstein polarons within the first Born approximation. This leads to a renormalization of the Fermi velocity of one percent. We further compute the optical conductivity of the system at the Dirac point and at finite doping within the Kubo-formula. We argue that the effects due to Holstein phonons are negligible and that the Boltzmann approach which does not include inter-band transition and can thus not treat optical phonons due to their high energy of $\hbarω_0\sim0.1-0.2$eV, remains valid.

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T. Stauber, N. M. R. Peres. 2008-01-28. Effect of Holstein phonons on the electronic properties of graphene. https://doi.org/10.1088/0953-8984%2F20%2F5%2F055002

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