169 citations · 287 across the 5 of their papers we have counts for
5 papers
Competition between local potentials and attractive particle-particle interactions in superlattices
N. A. Lima, A. L. Malvezzi, K. Capelle
Naturally occuring or man-made systems displaying periodic spatial modulations of their properties on a nanoscale constitute superlattices. Such modulated structures are important…
Effects of nanoscale spatial inhomogeneity in strongly correlated systems
M. F. Silva, N. A. Lima, A. L. Malvezzi +1
We calculate ground-state energies and density distributions of Hubbard superlattices characterized by periodic modulations of the on-site interaction and the on-site potential. Bo…
Density-functional theory for the Hubbard model: numerical results for the Luttinger liquid and the Mott insulator
K. Capelle, N. A. Lima, M. F. Silva +1
We construct and apply an exchange-correlation functional for the one-dimensional Hubbard model. This functional has built into it the Luttinger-liquid and Mott-insulator correlati…
What can Mott insulators teach us about density-functional theory (and vice versa)?
N. A. Lima, L. N. Oliveira, K. Capelle
We study the Mott insulating phase of the one-dimensional Hubbard model using a local-density approximation (LDA) that is based on the Bethe Ansatz (BA). Unlike conventional functi…
Density-functionals not based on the electron gas: Local-density approximation for a Luttinger liquid
N. A. Lima, M. F. Silva, L. N. Oliveira +1
By shifting the reference system for the local-density approximation (LDA) from the electron gas to other model systems one obtains a new class of density functionals, which by des…