597 citations · 5.9k across the 110 of their papers we have counts for
7 papers · 1 filter
Thermal phase transitions in a honeycomb lattice gas with three-body interactions
Maximilian Lohöfer, Lars Bonnes, Stefan Wessel
We study the thermal phase transitions in a classical (hard-core) lattice gas model with nearest-neighbor three-body interactions on the honeycomb lattice, based on parallel temper…
Quantum Nature of Edge Magnetism in Graphene
Michael Golor, Stefan Wessel, Manuel J. Schmidt
It is argued that the subtle crossover from decoherence-dominated classical magnetism to fluctuation-dominated quantum magnetism is experimentally accessible in graphene nanoribbon…
Dimerized Solids and Resonating Plaquette Order in SU(N)-Dirac Fermions
Thomas C. Lang, Zi Yang Meng, Alejandro Muramatsu +2
We study the quantum phases of fermions with an explicit SU(N)-symmetric, Heisenberg-like nearest-neighbor flavor exchange interaction on the honeycomb lattice at half-filling. Emp…
Magnetic Correlations in Short and Narrow Graphene Armchair Nanoribbons
Michael Golor, Cornelie Koop, Thomas C. Lang +2
Electronic states at the ends of a narrow armchair nanoribbon give rise to a pair of non-locally entangled spins. We propose two experiments to probe these magnetic states, based o…
Effective models for strong electronic correlations at graphene edges
Manuel J. Schmidt, Michael Golor, Thomas C. Lang +1
We describe a method for deriving effective low-energy theories of electronic interactions at graphene edges. Our method is applicable to general edges of honeycomb lattices (zigza…
Z2 topological invariants in two dimensions from quantum Monte Carlo
Thomas C. Lang, Andrew M. Essin, Victor Gurarie +1
We employ quantum Monte Carlo techniques to calculate the topological invariant in a two-dimensional model of interacting electrons that exhibits a quantum spin Hall topologi…