Graphene in a strong magnetic field: Massless Dirac particles versus skyrmions

Article

关键词: QUANTUM HALL SYSTEMS;    SPONTANEOUS INTERLAYER COHERENCE;    LANDAU-LEVEL;    STATES;    PHASE;    FERMIONS;    TRANSITION;    SYMMETRY;    MODES;   

DOI  :  10.1103/PhysRevB.78.195426

来源: SCIE

【 摘 要 】

We discuss models for massless Dirac fermions being subjected to a perpendicular magnetic field in spherical geometry. These models are analogs of Haldane's spherical construction for massful charge carriers. The single-particle states constructed here are easily implemented in existing numerical code for many-body problems in conventional quantum Hall systems. Moreover, the many-body states of fully filled sublevels in the subspace of lowest Landau-level index are skyrmions with respect to the layer spin.

【 授权许可】

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