The effect of the electron-electron interaction on the Lifshitz transition density in bilayer graphene

Details The effect of the electron-electron interaction on the Lifshitz transition density in bilayer graphene The effect of the electron-electron interaction on the Lifshitz transition density in bilayer graphene

2009-03-13

arxiv.org/abs/0903.2435v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

We study the renormalization of the effective mass and trigonal warping of bilayer graphene by the electron-electron interaction. One consequence of such a renormalization in the low-energy bands of a bilayer crystal consists of a small reduction of the critical density of the Lifshitz transition (the crossover between the single-pocket and four-pocket topology of the Fermi surface).

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