318 citations · 716 across the 4 of their papers we have counts for
4 papers
How to detect the pseudospin-1/2 Berry phase in a photonic crystal with a Dirac spectrum
R. A. Sepkhanov, Johan Nilsson, C. W. J. Beenakker
We propose a method to detect the geometric phase produced by the Dirac-type band structure of a triangular-lattice photonic crystal. The spectrum is known to have a conical singul…
Electronic properties of bilayer and multilayer graphene
Johan Nilsson, A. H. Castro Neto, F. Guinea +1
We study the effects of site dilution disorder on the electronic properties in graphene multilayers, in particular the bilayer and the infinite stack. The simplicity of the model a…
The Coulomb impurity problem in graphene
Vitor M. Pereira, Johan Nilsson, A. H. Castro Neto
We address the problem of an unscreened Coulomb charge in graphene, and calculate the local density of states and displaced charge as a function of energy and distance from the imp…
Electronic compressibility of a graphene bilayer
S. Viola Kusminskiy, Johan Nilsson, D. K. Campbell +1
We calculate the electronic compressibility arising from electron-electron interactions for a graphene bilayer within the Hartree-Fock approximation. We show that, due to the chira…