Formulation of the relativistic quantum Hall effect and parity anomaly

Article

关键词: TOPOLOGICAL INSULATOR;    MONOPOLE HARMONICS;    DIRAC FERMIONS;    GRAPHENE;    SURFACE;    STATE;    EXCITATIONS;    FLUID;    PHASE;   

DOI  :  10.1103/PhysRevB.93.235122

来源: SCIE

【 摘 要 】

We present a relativistic formulation of the quantum Hall effect on Haldane sphere. An explicit form of the pseudopotential is derived for the relativistic quantum Hall effect with/without mass term. We clarify particular features of the relativistic quantum Hall stateswith the use of the exact diagonalization study of the pseudopotential Hamiltonian. Physical effects of the mass term to the relativistic quantum Hall states are investigated in detail. Themass term acts as an interpolating parameter between the relativistic and nonrelativistic quantum Hall effects. It is pointed out that the mass term unevenly affects the many-body physics of the positive and negative Landau levels as a manifestation of the parity anomaly. In particular, we explicitly demonstrate the instability of the Laughlin state of the positive first relativistic Landau level with the reduction of the charge gap.

【 授权许可】

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