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

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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).
4 pages, 3 figures

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Mesoscale and Nanoscale Physics, Other Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/223294

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0903.2435
 http://arxiv.org/abs/0903.2435

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arXiv