Caustics due to Negative Refractive Index in Circular Graphene p-n Junctions

Abstract

We show that the wavefunctions form caustics in circular graphene p-n junctions which in the framework of geometrical optics can be interpreted with negative refractive index.

4 pages, 5 figures

References in corpus (2)

• Transport measurements across a tunable potential barrier in graphene
• Orthogonality catastrophe and Kondo effect in graphene