Browsing Exact and Earth Sciences by Author "Tamarit, Francisco A."
Now showing items 1-6 of 6
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Interplay between coarsening and nucleation in an Ising model with dipolar interactions
(2008) [Journal article]We study the dynamical behavior of a square lattice Ising model with exchange and dipolar interactions by means of Monte Carlo simulations. After a sudden quench to low temperatures, we find that the system may undergo a ... -
Ising nematic phase in ultrathin magnetic films : a Monte Carlo study
(2006) [Journal article]We study the critical properties of a two-dimensional Ising model with competing ferromagnetic exchange and dipolar interactions, which models an ultrathin magnetic film with high out-of-plane anisotropy in the monolayer ... -
Out-of-equilibrium dynamics of the Hopfield model in its spin-glass phase
(2000) [Journal article]In this paper, we study numerically the out-of-equilibrium dynamics of the Hopfield model for associative memory inside its spin-glass phase. Aside from its interest as a neural network model, it can also be considered as ... -
Quasistationary trajectories of the mean-field XY Halmitonian model : a topological perspective
(2005) [Journal article]We employ a topological approach to investigate the nature of quasistationary states of the mean-field XY Hamiltonian model. We focus on the quasistationary states reached when the system is initially prepared in a fully ... -
Spin reorientation transition and phase diagram of ultrathin ferromagnetic films
(2008) [Journal article]We show results from Monte Carlo simulations of a two-dimensional Heisenberg model for ultrathin films with perpendicular anisotropy. A complete phase diagram is obtained as a function of anisotropy and temperature, spanning ... -
Stripe-tetragonal first-order phase transition in ultrathin magnetic films
(2004) [Journal article]We analyze the nature of the phase transition from a smectic stripe phase to a tetragonal phase predicted in analytic studies by Abanov et al. [Phys. Rev. B 51, 1023 (1995)] and observed in experiments on ultrathin magnetic ...
