21 citations · 48 across the 8 of their papers we have counts for
9 papers
Revisiting a variational study of the quantum spin-1/2 Heisenberg antiferromagnet
Kevin J. Urcia Vidarte, Luigui A. Chero Nunura, Octavio D. Rodriguez Salmon +1
The variational study of the ground state of the spin anisotropic Heisenberg antiferromagnet has been revisited on a square lattice by improving and correcting past numerical…
The spin-3/2 Blume-Capel model with competing short- and long-range interactions
Octavio D. Rodriguez Salmon, Jose Ricardo de Sousa, Minos A. Neto +3
The phase diagrams of the spin- Blume-Capel model with competing short and long-range interactions were studied through the free energy density obtained by analytical methods.…
Magnetization plateaus in the antiferromagnetic Ising chain with single-ion anisotropy and quenched disorder
Minos A. Neto, J. Ricardo de Sousa, N. S. Branco
We have studied the presence of plateaus on the low-temperature magnetization of an antiferromagnetic spin-1 chain, as an external uniform magnetic field is varied. A crystal-field…
Optical and magnetic excitations of metal-encapsulating Si cages: A systematic study by time-dependent density functional theory
Micael J. T. Oliveira, Paulo V. C. Medeiros, José R. F. Sousa +2
Systematic study of the optical and magnetic excitations of twelve MSi and four MSi transition metal encapsulating Si cages has been carried out by employing real tim…
The Ising antiferromagnet on an anisotropic simple cubic lattice in the presence of a magnetic field
Octavio D. R. Salmon, Minos A. Neto, J. Roberto Viana +2
We have studied the anisotropic three-dimensional nearest-neighbor Ising model with competitive interactions in an uniform longitudinal magnetic field . The model consists of fe…
Phase Diagram of the Two-Dimensional Ising Model with Random Competing Interactions
Octavio R. Salmon, J. Ricardo de Sousa, Fernando D. Nobre
An Ising model with ferromagnetic nearest-neighbor interactions () and random next-nearest-neighbor interactions [ with probability and with p…