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Intraband electron focusing in bilayer graphene

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>21/06/2012
<mark>Journal</mark>New Journal of Physics
Number of pages13
Pages (from-to)063028
<mark>Original language</mark>English


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.