28 citations · 110 across the 8 of their papers we have counts for
8 papers
Evolution of Nagaoka phase with kinetic energy frustrating hoppings
F. T. Lisandrini, B. Bravo, A. E. Trumper +2
We investigate, using the density matrix renormalization group, the evolution of the Nagaoka state with hoppings that frustrate the hole kinetic energy in the Hubba…
Scaling of conductance through quantum dots with magnetic field
I. J. Hamad, C. Gazza, J. A. Andrade +3
Using different techniques, and Fermi-liquid relationships, we calculate the variation with applied magnetic field (up to second order) of the zero-temperature equilibrium conducta…
Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains
C. J. Gazza, A. O. Dobry, D. C. Cabra +1
We study the magnetic excitations on top of the plateaux states recently discovered in spin-Peierls systems in a magnetic field. We show by means of extensive density matrix renorm…
Spectral Function in Mott Insulating Surfaces
L. O. Manuel, C. J. Gazza, A. E. Feiguin +1
We show theoretically the fingerprints of short-range spiral magnetic correlations in the photoemission spectra of the Mott insulating ground states realized in the triangular sili…
Indications of Spin-Charge Separation at Short Distance and Stripe Formation in the Extended t-J Model on Ladders and Planes
G. B. Martins, J. C. Xavier, C. Gazza +2
The recently discussed tendency of holes to generate nontrivial spin environments in the extended two-dimensional t-J model (G. Martins, R. Eder, and E. Dagotto, Phys. Rev. B{\bf 6…
Stripes in the Ising Limit of Models for the Cuprates
G. B. Martins, C. Gazza, E. Dagotto
The hole-doped standard and extended t-J models on ladders with anisotropic Heisenberg interactions are studied computationally in the interval (, Ising;…
Hole-Pairs in a Spin Liquid: Influence of Electrostatic Hole-Hole Repulsion
C. Gazza, G. Martins, J. Riera +1
The stability of hole bound states in the t-J model including short-range Coulomb interactions is analyzed using computational techniques on ladders with up to sites.…
Heisenberg model with Dzyaloshinskii-Moriya interaction: A Schwinger boson study
L. O. Manuel, C. J. Gazza, A. E. Trumper +1
We present a Schwinger-boson approach to the Heisenberg model with Dzyaloshinskii-Moriya interaction. We write the anisotropic interactions in terms of Schwinger bosons keeping the…