Intraband electron focusing in bilayer graphene

Csaba G. Péterfalvi, László Oroszĺany, Colin J. Lambert, József Cserti

Research output: Article

12 Citations (Scopus)

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.

Original languageEnglish
Article number063028
JournalNew Journal of Physics
Volume14
DOIs
Publication statusPublished - jún. 1 2012

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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