Landau level spectra and the quantum Hall effect of multilayer graphene

Koshino, Mikito and McCann, Edward (2011) Landau level spectra and the quantum Hall effect of multilayer graphene. Physical review B, 83 (16). ISSN 1550-235X

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Abstract

The Landau level spectra and the quantum Hall effect of ABA-stacked multilayer graphenes are studied in the effective-mass approximation. The low-energy effective-mass Hamiltonian may be partially diagonalized into an approximate block-diagonal form, with each diagonal block contributing parabolic bands except for an additional block describing Dirac-like bands with a linear dispersion in a multilayer with an odd number of layers.We fully include the band parameters and, taking into account the symmetry of the lattice, we analyze their effect on the block-diagonal Hamiltonian. Next-nearest-layer couplings are shown to be particularly important in determining the low-energy spectrum and the phase diagram of the quantum Hall conductivity by causing energy shifts, level anticrossings, and valley splitting of the low-lying Landau levels.

Item Type:
Journal Article
Journal or Publication Title:
Physical review B
Additional Information:
©2011 American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
57834
Deposited By:
Deposited On:
28 Aug 2012 13:33
Refereed?:
Yes
Published?:
Published
Last Modified:
12 Jul 2020 03:58