Take a look at our latest Nano Letters article about the optical conductivity of two-dimensional silicon epitaxially grown on sapphire where we bring evidence of a Dirac electrodynamics in collaboration with Stefano
G Giannopoulos, G Barucca, A Kaidatzis, V Psycharis, R Salikhov, M Farle, E Koutsouflakis, D Niarchos, A Mehta, M Scuderi, G Nicotra, C Spinella, S Laureti, G Varvaro