• 文献标题:   Landau levels of multilayer graphene ribbons
  • 文献类型:   Article, Proceedings Paper
  • 作  者:   HUANG YC, LU CL, CHANG CP, LI TS
  • 作者关键词:   peierls coupling tightbinding model, landau level, graphene ribbon
  • 出版物名称:   DIAMOND RELATED MATERIALS
  • ISSN:   0925-9635
  • 通讯作者地址:   Kao Yuan Univ
  • 被引频次:   0
  • DOI:   10.1016/j.diamond.2009.12.012
  • 出版年:   2010

▎ 摘  要

The low-energy Landau levels of multilayer graphene ribbons with AB-stacking in the presence of a uniform perpendicular magnetic field (B) are investigated by the Peierls coupling tight-binding model. They are dominated by the B-field strength, the interlayer interactions, and the ribbon width. Many dispersionless Landau levels and parabolic energy bands exist along k(x) and k(z) directions respectively. The former are doubly degenerate, while state degeneracy is absent for the latter. The occupied valence bands are asymmetric to the unoccupied conduction bands about the Fermi level (EF). Such features are directly reflected in density of states (DOS). DOS exhibits a lot of asymmetric prominent peaks because of 1D curving bands. Meanwhile, the Landau-level energies following the simple relation E-c,E-v proportional to root B are observed. The predicted magnetoelectronic properties could be examined by the experimental measurements on transport conductance and absorption spectra. (C) 2009 Elsevier B.V. All rights reserved.