Interacting Dirac Fermions on Honeycomb Lattice

Details Interacting Dirac Fermions on Honeycomb Lattice Interacting Dirac Fermions on Honeycomb Lattice

2010-05-12

arxiv.org/abs/1005.2043v2

Phys. Rev. B 82, 245102 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 6 figures

Scientific paper

10.1103/PhysRevB.82.245102

We investigate the interacting Dirac fermions on honeycomb lattice by cluster dynamical mean-field theory (CDMFT) combined with continuous time quantum Monte Carlo simulation (CTQMC). A novel scenario for the semimetal-Mott insulator transition of the interacting Dirac fermions is found beyond the previous DMFT studies. We demonstrate that the non-local spatial correlations play a vital role in the Mott transition on the honeycomb lattice. We also elaborate the experimental protocol to observe this phase transition by the ultracold atoms on optical honeycomb lattice.

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