Intraband electron focusing in bilayer graphene
Mesoscale and Nanoscale Physics
2012-06-26 v2
Abstract
We propose an implementation of a valley selective electronic Veselago lens in bilayer graphene. We demonstrate that in the presence of an appropriately oriented potential step, low-energy electrons radiating from a point source can be re-focused coherently within the same band. The phenomenon is due to the trigonal warping of the band structure that leads to a negative refraction index. We show that the interference pattern can be controlled by an external mechanical strain.
Cite
@article{arxiv.1203.6517,
title = {Intraband electron focusing in bilayer graphene},
author = {Csaba G. Péterfalvi and László Oroszlány and Colin J. Lambert and József Cserti},
journal= {arXiv preprint arXiv:1203.6517},
year = {2012}
}
Comments
14 pages, 8 figures