110 citations · 206 across the 11 of their papers we have counts for
11 papers
The 2D attractive Hubbard model and the BCS-BEC crossover
Rodrigo A. Fontenele, Natanael C. Costa, Raimundo R. dos Santos +1
Recent experiments with ultracold fermionic atoms in optical lattices have provided a tuneable and clean realization of the attractive Hubbard model (AHM). In view of this, several…
Disordered two-dimensional superconductors: roles of temperature and interaction strength
Felipe Mondaini, Thereza Paiva, Raimundo R. dos Santos +1
We have considered the half-filled disordered attractive Hubbard model on a square lattice, in which the on-site attraction is switched off on a fraction of sites, while keepin…
Modulation of charge-density waves by superlattice structures
Andre L Malvezzi, Thereza Paiva, Raimundo R dos Santos
We discuss the interplay between electronic correlations and an underlying superlattice structure in determining the period of charge density waves (CDW's), by considering a one-di…
Destruction of Superconductivity by Impurities in the Attractive Hubbard Model
Daniel Hurt, Evan Odabashian, Warren Pickett +4
We study the effect of U=0 impurities on the superconducting and thermodynamic properties of the attractive Hubbard model on a square lattice. Removal of the interaction on a criti…
Disorder and the effective Mn-Mn exchange interaction in GaMnAs diluted magnetic semiconductors
Antonio J. R. da Silva, A. Fazzio, Raimundo R. dos Santos +1
We perform a theoretical study, using {\it ab initio} total energy density-functional calculations, of the effects of disorder on the exchange interactions for $Ga_{1-x}Mn_…
Critical temperature for the two-dimensional attractive Hubbard Model
Thereza Paiva, Raimundo R. dos Santos, R. T. Scalettar +1
The critical temperature for the attractive Hubbard model on a square lattice is determined from the analysis of two independent quantities, the helicity modulus, , and the pa…