78 citations · 188 across the 11 of their papers we have counts for
8 papers · 1 filter
Coexistence of antiferromagnetism and superconductivity in the Anderson lattice
P. D. Sacramento
We study the interplay between antiferromagnetism and superconductivity in a generalized infinite- Anderson lattice, where both superconductivity and antiferromagnetic order are…
One and Two-Electron Spectral Function Line Shapes in the Vicinity of the Upper-Hubbard Bands Lower Limit
J. M. P. Carmelo, L. M. Martelo, P. D. Sacramento
In this paper we derive general expressions for few-electron spectral functions of the one-dimensional Hubbard model for values of the excitation energy in the vicinity of the $M^{…
The Hubbard model description of the photoemission TCNQ singular features
J. M. P. Carmelo, K. Penc, P. D. Sacramento +2
In this paper we use the pseudofermion dynamical theory (PDT) in the study of the one-electron removal singular spectral features the one-dimensional Hubbard model. The PDT reveals…
Interplay of disorder and magnetic field in the superconducting vortex state
J. Lages, P. D. Sacramento, Z. Tesanovic
We calculate the density of states of an inhomogeneous superconductor in a magnetic field where the positions of vortices are distributed completely at random. We consider both the…
Non-equilibrium properties of the S=1/2 Heisenberg model in a time-dependent magnetic field
V. Turkowski, V. R. Vieira, P. D. Sacramento
The time-dependent behavior of the Heisenberg model in contact with a phonon heat bath and in an external time-dependent magnetic field is studied by means of a path integral appro…
Electronic structure of the quasi-one-dimensional organic conductor TTF-TCNQ
M. Sing, U. Schwingenschlögl, R. Claessen +6
We study the electronic structure of the quasi-one-dimensional organic conductor TTF-TCNQ by means of density-functional band theory, Hubbard model calculations, and angle-resolved…