38 citations · 181 across the 15 of their papers we have counts for
15 papers
Self-energy effects in cuprates and the dome-shaped behavior of the superconducting critical temperature
Guillermo Buzon, Adriana Foussats, Matías Bejas +1
Hole doped cuprates show a superconducting critical temperature which follows an universal dome-shaped behavior as function of doping. It is believed that the origin of super…
Doping and temperature dependence of the pseudogap and Fermi arcs in cuprates from -CDW short-range fluctuations in the context of the t-J model
Matías Bejas, Guillermo Buzon, Andrés Greco +1
At mean-field level the t-J model shows a phase diagram with close analogies to the phase diagram of hole doped cuprates. An order parameter associated with the flux or charge-…
Path integrals for dimerized quantum spin systems
Adriana Foussats, Andres Greco, Alejandro Muramatsu
Dimerized quantum spin systems may appear under several circumstances, e.g\ by a modulation of the antiferromagnetic exchange coupling in space, or in frustrated quantum antiferrom…
Role of dynamical non-double-occupancy excitations on the quasiparticle damping of the model in the large- limit
A. Foussats, A. Greco, M. Bejas
One-electron self-energy in the - model was computed using a recently developed large- method based on the path integral representation for Hubbard operators. One of the m…
One-particle spectral properties of the t-J- model on the triangular lattice near charge order
M. Bejas, A. Greco, A. Muramatsu +1
We study the t-J- model beyond mean field level at finite doping on the triangular lattice. The Coulomb repulsion between nearest neighbors brings the system to a charge ord…
Charge order and phonon renormalizations: Possible implications for cobaltates
M. Bejas, A. Greco, A. Foussats
Several experimental and theoretical studies in cobaltates suggest the proximity of the system to charge ordering (CO). We show, qualitatively, in the frame of a model couple…