%0 Journal Article
%T Intraband electron focusing in bilayer graphene
%A Csaba G. P¨¦terfalvi
%A L¨¢szl¨® Oroszl¨¢ny
%A Colin J. Lambert
%A J¨®zsef Cserti
%J Physics
%D 2012
%I arXiv
%R 10.1088/1367-2630/14/6/063028
%X 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.
%U http://arxiv.org/abs/1203.6517v2