619 citations · 646 across the 3 of their papers we have counts for
3 papers
Disorder Induced Localized States in Graphene
Vitor M. Pereira, F. Guinea, J. M. B. Lopes dos Santos +2
We consider the electronic structure near vacancies in the half-filled honeycomb lattice. It is shown that vacancies induce the formation of localized states. When particle-hole sy…
Double Exchange Model for Magnetic Hexaborides
Vitor M. Pereira, J. M. B. Lopes dos Santos, Eduardo V. Castro +1
A microscopic theory for rare-earth ferromagnetic hexaborides, such as Eu(1-x)Ca(x)B6, is proposed on the basis of the double-exchange Hamiltonian. In these systems, the reduced ca…
One-Particle Spectral Properties of Mott-Hubbard Insulators
J. M. P. Carmelo, J. M. E. Guerra, J. M. B. Lopes dos Santos +1
We use an exact holon and spinon Landau-liquid functional which describes the holon - spinon interactions at all scattering orders, to study correlation functions of integrable mul…