We show that the wave functions form caustics in circular graphene p-n junctions which in the framework of geometrical optics can be interpreted with a negative refractive index.
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cserti, J., Pályi, A., & Péterfalvi, C. (2007). Caustics due to a negative refractive index in circular graphene p-n junctions. Physical review letters, 99(24), . https://doi.org/10.1103/PhysRevLett.99.246801