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  • Title: The effect of spin mixing on the quantum Hall effect in graphene.
    Author: Sheng L, Sheng DN, Xing DY.
    Journal: J Phys Condens Matter; 2009 Oct 07; 21(40):405501. PubMed ID: 21832417.
    Abstract:
    On the basis of a tight-binding model, we study numerically the effect of Rashba spin-orbit coupling on the quantum Hall effect in graphene. It is found that the spin-orbit coupling can open a gap in the energy spectrum of the counterpropagating edge states in the ν = 0 plateau region, while the edge states in other plateau regions remain gapless. In the presence of disorder, the energy spectrum in the ν = 0 plateau region shows the feature of level repulsion, an indication of switching on of backward scattering and localization of the edge states. This result may explain the insulator-like behavior near the Dirac points observed in experiments at low temperatures.
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