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Berlin 2012 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 102: Transport: Graphene 2 (jointly with TT, MA, DY, DS, O)

HL 102.12: Talk

Friday, March 30, 2012, 12:30–12:45, BH 334

Effect of short-range interactions on the phase diagram of graphene — •David Mesterhazy1, Jürgen Berges1, and Lorenz von Smekal21Institut für Theoretische Physik, Universität Heidelberg — 2Institut für Kernphysik, Technische Universität Darmstadt

We study low-energy theories of suspended monolayer graphene at the charge neutral point by means of functional renormalization group methods. In particular, the role of residual short-range interactions for the expected chiral phase transition is investigated. The resulting effective low-energy description can provide a firm basis for a study of the universal properties of the quantum phase transition. Furthermore, first results for the phase diagram at finite temperature are presented.

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