Configurationenriched magnetoelectronic spectra of AABstacked trilayer graphene
Abstract
We developed the generalized tightbinding model to study the magnetoelectronic properties of AABstacked trilayer graphene. Three groups of Landau levels (LLs) are characterized by the dominating subenvelope function on distinct sublattices. Each LL group could be further divided into two subgroups in which the wavefunctions are, respectively, localized at 2/6 (5/6) and 4/6 (1/6) of the total length of the enlarged unit cell. The unoccupied conduction and the occupied valence LLs in each subgroup behave similarly. For the first group, there exist certain important differences between the two subgroups, including the LL energy spacings, quantum numbers, spatial distributions of the LL wavefunctions, and the fielddependent energy spectra. The LL crossings and anticrossings occur frequently in each subgroup during the variation of field strengths, which thus leads to the very complex energy spectra and the seriously distorted wavefunctions. Also, the density of states (DOS) exhibits rich symmetric peak structures. The predicted results could be directly examined by experimental measurements. The magnetic quantization is quite different among the AAB, AAA, ABA, and ABCstacked configurations.
 Publication:

arXiv eprints
 Pub Date:
 March 2015
 arXiv:
 arXiv:1503.07958
 Bibcode:
 2015arXiv150307958D
 Keywords:

 Condensed Matter  Materials Science;
 Condensed Matter  Mesoscale and Nanoscale Physics