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“Tunnel” for electron waves in graphene superlattices

Fernandes, D. E. ; Engheta, N. ; Silveirinha, M. G.

“Tunnel” for electron waves in graphene superlattices , Proc Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, Copenhagen, Denmark, Vol. 1, pp. 1 - 3, August, 2014.

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Motivated by the possibility of extending transformation optics to the propagation of electrons
in condensed matter systems, in this work we propose that graphene-based nanostructures can be used to
demonstrate a “tunnel” for electron waves. Using an effective medium framework, we demonstrate from a
theoretical standpoint, that two properly engineered graphene-based nanomaterials can allow bridging
two different regions of space, as if the region in between was non-existent.