Many-body orbital paramagnetism in doped graphene sheets
Mesoscale and Nanoscale Physics
2010-06-04 v1
Abstract
The orbital magnetic susceptibility (OMS) of a gas of noninteracting massless Dirac fermions is zero when the Fermi energy is away from the Dirac point. Making use of diagrammatic perturbation theory, we calculate exactly the OMS of massless Dirac fermions to first order in the Coulomb interaction demonstrating that it is finite and positive. Doped graphene sheets are thus unique systems in which the OMS is completely controlled by many-body effects.
Cite
@article{arxiv.1004.2636,
title = {Many-body orbital paramagnetism in doped graphene sheets},
author = {A. Principi and Marco Polini and G. Vignale and M. I. Katsnelson},
journal= {arXiv preprint arXiv:1004.2636},
year = {2010}
}
Comments
4 pages, 2 figures, submitted