301 citations · 505 across the 3 of their papers we have counts for
3 papers
Polarization Charge Distribution in Gapped Graphene
Valeri N. Kotov, Vitor M. Pereira, Bruno Uchoa
We study the distribution of vacuum polarization charge induced by a Coulomb impurity in massive graphene. By analytically computing the polarization function, we show that the cha…
Supercritical Coulomb Impurities in Gapped Graphene
Vitor M. Pereira, Valeri N. Kotov, A. H. Castro Neto
We study the problem of Coulomb field-induced charging of the ground state in a system of 2D massive Dirac particles (gapped graphene). As in its 3D QED counterpart, the critical C…
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…