Spin Versus Charge Density Wave Order in Graphene-like Systems
arXiv:1204.4531 · doi:10.1103/PhysRevB.86.121402
Abstract
A variational technique is used to study sublattice symmetry breaking by strong on-site and nearest neighbor interactions in graphene. When interactions are strong enough to break sublattice symmetry, and with relative strengths characteristic of graphene, a charge density wave Mott insulator is favored over the spin density wave condensates. In the spin density wave condensate we find that introduction of a staggered on-site energy (quasiparticle mass) leads to a splitting of the fermi velocities and mass gaps of the quasiparticle spin states.
5 pages, 4 figures; some comments added
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Cited by in corpus (13)
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- Hybrid-Monte-Carlo study of competing order in the extended fermionic Hubbard model on the hexagonal lattice
- Critical (Chiral) Heisenberg Model with the Functional Renormalisation Group
- Competition of density waves and quantum multicritical behavior in Dirac materials from functional renormalization
- Mott multicriticality of Dirac electrons in graphene
- Effect of short-range interactions on the quantum critical behavior of spinless fermions on the honeycomb lattice
- Numerical evidence of conformal phase transition in graphene with long-range interactions
- Holographic sliding stripes
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