%0 Journal Article
%A Liebsch, A.
%T Correlated Dirac fermions on the honeycomb lattice studied within cluster dynamical mean field theory
%J Physical review / B
%V 83
%N 3
%@ 1098-0121
%C College Park, Md.
%I APS
%M PreJuSER-18487
%P 035113
%D 2011
%Z Record converted from VDB: 12.11.2012
%X The role of nonlocal Coulomb correlations in the honeycomb lattice is investigated within cluster dynamical mean field theory combined with finite-temperature exact diagonalization. The paramagnetic semimetal-to-insulator transition is found to be in excellent agreement with finite-size determinantal quantum Monte Carlo simulations and with cluster dynamical mean field calculations based on the continuous-time quantum Monte Carlo approach. As expected, the critical Coulomb energy is much lower than within a local or single-site formulation. Short-range correlations are shown to give rise to a pseudogap and concomitant non-Fermi-liquid behavior within a narrow range below the Mott transition.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000286767800001
%R 10.1103/PhysRevB.83.035113
%U https://juser.fz-juelich.de/record/18487