Short-time dynamics of a metamagnetic model
We studied a layered metamagnetic Ising model with competing ferromagnetic and antiferromagnetic interactions on a square lattice. The model is formed of ferromagnetic chains coupled by an antiferromagnetic interaction. Using Monte Carlo simulations we have determined the phase diagram of the model, which exhibits a tricritical point. By exploring the short-time scaling dynamics, we have found the dynamic and static critical exponents along the continuous transition line between the antiferromagnetic and paramagnetic phases.
Santos
M
Departamento de Fisica, Universidade Federal de Santa Catarina, CEP 88040-900, Florianopolis, SC, Brazil.
Figueiredo
W