10 citations · 12 across the 4 of their papers we have counts for
4 papers
Phase diagram for the spin-3/2 quantum ferromagnetic Blume-Capel model in a transverse crystal field: an approximation at the mean-field level
D. C. Carvalho, J. A. Plascak
We investigate the phase diagram for the spin- ferromagnetic Blume-Capel model in a transverse crystal field using the standard mean-field approximation within the framework o…
A new effective-field technique for the ferromagnetic spin-1 Blume-Capel model in a transverse crystal field
J. Roberto Viana, Octavio D. Rodriguez Salmon, Minos A. Neto +1
A new approximating technique is developed so as to study the quantum ferromagnetic spin-1 Blume-Capel model in the presence of a transverse crystal field in the square lattice. Ou…
Spin- ferromagnetic Heisenberg model with an easy-plane crystal field on the cubic lattice: A bosonic approach
D. C. Carvalho, A. S. T. Pires, L. A. S. Mól
We examine the phase diagram of the spin- ferromagnetic Heisenberg model with an easy-plane crystal field on the cubic lattice, in which is the ferromagnetic…
Quantum Spin- Anisotropic Ferromagnetic Heisenberg Model in a Crystal Field: A Variational Approach
Diego da Cunha Carvalho, João Antônio Plascak, Luizdarcy de Matos Castro
A variational approach based on Bogoliubov inequality for the free energy is employed in order to treat the quantum spin- anisotropic ferromagnetic Heisenberg model in the prese…