Out-of-equilibrium dynamics in the bidimensional spin-ice model
Université Pierre et Marie Curie - Paris 6, Laboratoire de Physique Théorique et Hautes Energies 4, Place Jussieu, Tour 13, 5ème étage, 75252 Paris Cedex 05, France
Accepted: 15 December 2011
We study the dynamics of 2d spin-ice following a quench from a fully disordered initial condition (equilibrium at infinite temperature) into its disordered, ferromagnetic and antiferromagnetic phases. We analyze the evolution of the density of topological defects and we show that these take finite density over very long periods of time in all kinds of quenches. We identify the leading mechanisms for the growth of domains in the ordered phases and we evaluate the (anisotropically) growing lengths involved in dynamic scaling.
PACS: 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 75.10.Hk – Classical spin models / 75.40.Mg – Numerical simulation studies
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