48 citations · 67 across the 3 of their papers we have counts for
3 papers
cond-mat.stat-mech2008★ 15 cited
Two dimensional XXZ-Ising model on square-hexagon lattice
J. S. Valverde, Onofre Rojas, S. M. de Souza
We study a two dimensional XXZ-Ising on square-hexagon (4-6) lattice with spin-1/2. The phase diagram of the ground state energy is discussed, shown two different ferrimagnetic sta…
cond-mat.stat-mech2008★ 48 cited
Phase diagram of the asymmetric tetrahedral Ising-Heisenberg chain
J. S. Valverde, Onofre Rojas, S. M. de Souza.
The asymmetric tetrahedron is composed by all edges of tetrahedron represented by Ising interaction except one, which has a Heisenberg type interaction. This asymmetric tetrahedron…
cond-mat.stat-mech2008★ 4 cited
A set of exactly solvable Ising models with half-odd-integer spin
Onofre Rojas, S. M. de Souza
We present a set of exactly solvable Ising models, with half-odd-integer spin-S on a square-type lattice including a quartic interaction term in the Hamiltonian. The particular pro…