Misoriented bilayer graphene in a magnetic field: Optical transitions at commensurate angles
Mesoscale and Nanoscale Physics
2011-03-01 v1
Abstract
Misoriented bilayer graphene with commensurate angles shows unique magneto-optical properties. The optical absorption spectra of such a system strongly depend on the angle of rotation. For a general commensurate twist angle the absorption spectra has a simple single-peak structure. However, our studies indicate that there are special angles at which the absorption spectra of the rotated bilayer exhibit well developed multi-peak structures. These angles correspond to even symmetry of the rotated graphene with respect to the sublattice exchange. Magneto-spectroscopy can therefore be a potentially useful scheme to determine the twist angles.
Keywords
Cite
@article{arxiv.1102.5660,
title = {Misoriented bilayer graphene in a magnetic field: Optical transitions at commensurate angles},
author = {Vadim M. Apalkov and Tapash Chakraborty},
journal= {arXiv preprint arXiv:1102.5660},
year = {2011}
}
Comments
4 pages, 4 figures