Three-dimensional chiral Veselago lensing
Three-dimensional chiral Veselago lensing
The effect by which light focuses upon entering a medium with a negative refractive index, known as Veselago lensing, may enable optical imaging below the diffraction limit. Similarly, focusing electrons across a $p\ensuremath{-}n$ junction could realize a technologically promising electronic Veselago lens. However, its scope remains limited by the lack …