• 文献标题:   FRACTIONAL QUANTUM HALL STATES IN GRAPHENE
  • 文献类型:   Article
  • 作  者:   JELLAL A, MALIKA B
  • 作者关键词:   dirac hamiltonian, graphene, laughlin state, su n wavefunction, composite fermion
  • 出版物名称:   INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS
  • ISSN:   0219-8878
  • 通讯作者地址:   Abdus Salam Int Ctr Theoret Phys
  • 被引频次:   3
  • DOI:   10.1142/S0219887810003975
  • 出版年:   2010

▎ 摘  要

We quantum mechanically analyze the fractional quantum Hall effect in graphene. This will be done by building the corresponding states in terms of a potential governing the interactions and discussing other issues. More precisely, we consider a system of particles in the presence of an external magnetic field and take into account of a specific interaction that captures the basic features of the Laughlin series nu = 1/2l + 1. We show that how its Laughlin potential can be generalized to deal with the composite fermions in graphene. To give a concrete example, we consider the SU(N) wavefunctions and give a realization of the composite fermion filling factor. All these results will be obtained by generalizing the mapping between the Pauli-Schrodinger and Dirac Hamiltonian's to the interacting particle case. Meantime by making use of a gauge transformation, we establish a relation between the free and interacting Dirac operators. This shows that the involved interaction can actually be generated from a singular gauge transformation.