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cond-mat.mes-hall2008★ 32 cited
Coupled charge and valley excitations in graphene quantum Hall ferromagnets
Naokazu Shibata, Kentaro Nomura
Graphene is a two-dimensional carbon material with a honeycomb lattice and Dirac-type low-energy spectrum. In a strong magnetic field, where Coulomb interactions dominate against d…
cond-mat.mes-hall2008★ 66 cited
Quantum Hall Effect of Massless Dirac Fermions in a Vanishing Magnetic Field
Kentaro Nomura, Shinsei Ryu, Mikito Koshino +2
The effect of strong long-range disorder on the quantization of the Hall conductivity in graphene is studied numerically. It is shown that increasing Landau-level mixing p…