Magnetic field screening and mirroring in graphene
Mesoscale and Nanoscale Physics
2015-05-13 v2
Abstract
The orbital magnetism in spatially varying magnetic fields is studied in monolayer graphene within the effective mass approximation. We find that, unlike the conventional two-dimensional electron system, graphene with small Fermi wave number k_F works as a magnetic shield where the field produced by a magnetic object placed above graphene is always screened by a constant factor on the other side of graphene. The object is repelled by a diamagnetic force from the graphene, as if there exists its mirror image with a reduced amplitude on the other side of graphene. The magnitude of the force is much greater than that of conventional two-dimensional system. The effect disappears with the increase of k_F.
Keywords
Cite
@article{arxiv.0903.1690,
title = {Magnetic field screening and mirroring in graphene},
author = {Mikito Koshino and Yasunori Arimura and Tsuneya Ando},
journal= {arXiv preprint arXiv:0903.1690},
year = {2015}
}
Comments
5 pages, 3 figures