We analyze the single-particle and collective excitations near the metal to charge-transfer insulator transition, using the slave-boson technique. We show that the Mott transiti...
We study the mean-field phase diagram of a two-band t-J model. Upon varying the doping and the values of the parameters, we identify solutions with different magnetic structure ...
With use of the symmetry properties of the half-filled single-band Hubbard Hamiltonian, there is derived an effective Hamiltonian on a decimated lattice in which the spin and ch...
We analyze the collective excitations near a Mott-Hubbard and a metal charge transfer insulator transition, using the slave boson technique. We show that the Mott transition can...
A phase diagram for all the possible collinear spin arrangements for ${\mathrm{V}}_{2}$${\mathrm{O}}_{3}$ is derived within the atomic limit. Due to the fact that the ${a}_{1g}$...
h-index: Number of publications with at least h citations each.