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Spontaneous symmetry breaking and Lifshitz transition in bilayer graphene

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Article number201408
<mark>Journal publication date</mark>17/11/2010
<mark>Journal</mark>Physical review b
Issue number20
Number of pages4
Pages (from-to)-
<mark>Original language</mark>English


We derive the renormalization-group equations describing all the short-range interactions in bilayer graphene allowed by symmetry, the long-range Coulomb interaction, and band-structure parameters. For certain range of parameters, we predict the first-order phase transition to the uniaxially deformed gapless state accompanied by the change in the topology of the electron spectrum.