Electronic shells of Dirac fermions in graphene quantum rings in a magnetic field
Materials Science
2010-08-30 v1 Mesoscale and Nanoscale Physics
Abstract
We present results of tight binding calculations demonstrating existence of degenerate electronic shells of Dirac Fermions in narrow, charge neutral graphene quantum rings. We predict removal of degeneracy with finite magnetic field. We show, using a combination of tight binding and configuration interaction methods, that by filling a graphene ring with additional electrons this carbon based structure with half-filled shell acquires a finite magnetic moment.
Keywords
Cite
@article{arxiv.0908.3693,
title = {Electronic shells of Dirac fermions in graphene quantum rings in a magnetic field},
author = {P. Potasz and A. D. Guclu and P. Hawrylak},
journal= {arXiv preprint arXiv:0908.3693},
year = {2010}
}
Comments
10 pages, 4 figures